Graichen F, Bergmann G, Rohlmann A
Hip endoprosthesis for in vivo measurement of joint force and temperature.
J Biomech. 1999 Oct;32(10):1113-7

Ramírez R, Pöschel T, Brilliantov NV, Schwager T
Coefficient of restitution of colliding viscoelastic spheres.
Phys Rev E Stat Phys Plasmas Fluids Relat Interdiscip Topics. 1999 Oct;60(4 Pt B):4465-72

Mittlmeier T, Weiler A, Söhn T, Kleinhans L, Mollbach S, Duda G, Südkamp NP
Functional monitoring during rehabilitation following anterior cruciate ligament reconstruction.
Clin Biomech (Bristol, Avon). 1999 Oct;14(8):576-84

Kolbeck S, Bail H, Weiler A, Windhagen H, Haas N, Raschke M
Digital radiography. A predictor of regenerate bone stiffness in distraction osteogenesis.
Clin Orthop Relat Res. 1999 Sep;(366):221-8

Schaser KD, Vollmar B, Menger MD, Schewior L, Kroppenstedt SN, Raschke M, Lubbe AS, Haas NP, Mittlmeier T
In vivo analysis of microcirculation following closed soft-tissue injury.
J Orthop Res. 1999 Sep;17(5):678-85

Windhagen H, Bail H, Schmeling A, Kolbeck S, Weiler A, Raschke M
A new device to quantify regenerate torsional stiffness in distraction osteogenesis.
J Biomech. 1999 Aug;32(8):857-60

Bergmann G, Graichen F, Rohlmann A
Hip joint forces in sheep.
J Biomech. 1999 Aug;32(8):769-77

Calisse J, Rohlmann A, Bergmann G
Estimation of trunk muscle forces using the finite element method and in vivo loads measured by telemeterized internal spinal fixation devices.
J Biomech. 1999 Jul;32(7):727-31

Wildemann B, Bicker G
Nitric oxide and cyclic GMP induce vesicle release at Drosophila neuromuscular junction.
J Neurobiol. 1999 Jun 5;39(3):337-46

Rohlmann A, Calisse J, Bergmann G, Weber U
Internal spinal fixator stiffness has only a minor influence on stresses in the adjacent discs.
Spine (Phila Pa 1976). 1999 Jun 15;24(12):1192-5; discussion 1195-6

Rohlmann A, Bergmann G, Graichen F, Weber U
[Loading on internal spinal fixation devices]
Orthopade. 1999 May;28(5):451-7

Weiler A, Hoffmann RF, Sudkamp NP, Siepe CJ, Haas NP
[Replacement of the anterior cruciate ligament. Biomechanical studies for patellar and semitendinosus tendon fixation with a poly(D,L-lactide) interference screw]
Unfallchirurg. 1999 Feb;102(2):115-23

Raschke MJ, Bail H, Windhagen HJ, Kolbeck SF, Weiler A, Raun K, Kappelgard A, Skiaerbaek C, Haas NP
Recombinant growth hormone accelerates bone regenerate consolidation in distraction osteogenesis.
Bone. 1999 Feb;24(2):81-8

Rohlmann A, Bergmann G, Graichen F, Neff G
Braces do not reduce loads on internal spinal fixation devices.
Clin Biomech (Bristol, Avon). 1999 Feb;14(2):97-102

Wildemann B, Bicker G
Developmental expression of nitric oxide/cyclic GMP synthesizing cells in the nervous system of Drosophila melanogaster.
J Neurobiol. 1999 Jan;38(1):1-15

Rohlmann A, Bergmann G, Graichen F
Loads on internal spinal fixators measured in different body positions.
Eur Spine J. 1999;8(5):354-9

Weiler A, Rehm O, Hoffmann RFG, Südkamp NP
Histologische Analyse der Knochen-Sehnenheilung nach Knochenblock-freier Interferenzschraubenverankerung beim Kreuzbandersatz - Eine zwei-Jahres Studie am Schaf.
Unfallchirurg 1999;Suppl 275:248-249

Brand JC, Weiler A, Caborn-DNM, Johnson DL
Graft fixation issues in knee ligament surgery.
Oper Techn Orthop 1999;9:256-263

Saluena C, Esipov SE, Poeschel T
Dissipative properties of vibrated granular materials.
Phys Rev E 1999;59:4422-25

Saluena C, Poeschel T
Convection patterns in horizontally shaken granular material.
Eur Phys J B 1999;10:169-174

Kassi JP, Hoffmann JE, Heller M, Khodadadyan C, Raschke M, Duda G
Bedeutung einzelner Gestaltparameter für das mechanische Verhalten von Ilizarov-Ringfixateuren.
Unfallchirurg 1999; 275 Suppl:471

Heller M, Madruzzato F, Goldhahn J, Hehli M, Moser R, Duda GN Mechanische Rahmenbedingungen der Frakturheilung: Grenzindikationen für die Versorgung mit dem unaufgebohrten Tibiamarknagel. Unfallchirurg 1999;275 Suppl:467 Unterhauser FN, Hüning M, Schaser KD, Weiler A Alpha-Smooth Muscle Actin Expression in Fibroblasten des nativen vorderen Kreuzbandes und seines freien Sehnentransplantates während des späten Remodelings - Immunhistochemische zwei-Jahres Untersuchung am Schaf Unfallchirurg 1999;275 Suppl:349-351Hoffmann JE, Schmidmaier G, Duda GN, Raschke M Ein neues standardisiertes Frakturmodell an der Ratte. Unfallchirurg 1999; 275 Suppl:275-276 Pohl M, Duda GN, Heller M, Claes L Ein muskuloskelettales Modell der hinteren Schafsextremität zur Optimierung und Einschränkung tierexperimenteller Studien. Unfallchirurg 1999;275 Suppl:272-273Schmidmaier G, Raschke M, Bail H, Stange R, Stemberger A, Haas NP Beschleunigung der Frakturheilung durch eine bioaktive Poly-D,L-laktid Beschichtung von Implantaten mit kontinuierlicher Freisetzng von Wachstumsfaktoren. Unfallchirurg 1999;275 Suppl:220-221 Raschke M, Schmidmaier G, Bail H, Stemberger A, Haas NP Die Wirksamkeit von systemischer Gabe von Wachstumshormon (GH) im Vergleich zur lokalen Applikation von Waschstumsfaktoren auf die Frakturheilung. Unfallchirurg 1999;275 Suppl:148-149 Kolbeck S, Bail H, Schmidmaier G, Remmler F, Raun K, Raschke M Rekombinantes Wachstumshormon bewirkt eine starke Beschleuniung der Heilung von tibialen Knochendefekten beim Minischwein. Unfallchirurg 1999;275 Suppl:141-142Weiler A, Hoffmann RFG, Südkamp NP, Siepe CJ, Haas NP Ersatz des vorderen Kreuzbandes - Biomechanische Untersuchungen zur Patellar- und Semitendinosussehnen Verankerung mit einer Poly-(D,L-Laktid) Interferenzschraube. Unfallchirurg 1999;102:115-123Schmidmaier G, Raschke M, Bail H, Kolbeck S, Haas NP The local application of growth factors like IGF-I and TGF-beta I from a biodegradable Poly(D,L-lactide) coating of implants increases fracture healing. J Orthop Trauma: Trans Orthop Trauma Ass 1999;15:95-96 Schmidmaier G, Raschke M, Stemberger A, Schaser K, Bail H, Weiler A, Haas NP Poly-(D,L-lactide) coating of steel and titanium implants for contiunous release of localy active growth factors J Orthop Res: Trans Orthop Res Soc 1999;45:501 Kolbeck S, Bail H, Raun K, Schmidmaier G, Haas NP, Raschke M Recombinant growth hormone accelerates the healing of segmental bone defects: An animal study in minipigs. J Orthop Trauma: Trans Orthop Trauma Ass 1999;15:92-94 Kolbeck S, Bail H, Stosch-Wiechert K, Schmidmaier G, Roenne IA Application of recombinant growth hormone accelerates the healing of segmental bone defects. J Orthop Res: Trans Orthop Res Soc 1999;45:603 Brilliantov NV, Poeschel T Rolling as a "continuing collision". Eur Phys J B 1999;12(2):299-301 Poeschel T, Schwager T, Brilliantov NV Rolling friction of a hard cylinder on a viscous plane. Eur Phys J B 1999;10:69-174 Weiler A, Hoffmann RFG, Bail HJ, Rehm O, Südkamp NP Tendon healing in a bone tunnel - Histological analysis after biodegradable interference fit fixation. Arthroscopy 1999;15:548-549

Duda GN, Heller M, Albinger J, Schulz O, Schneider E, Claes L
Influence of muscle forces on femoral strain distribution.
J Biomech. 1998 Sep;31(9):841-6

Rohlmann A, Bergmann G, Graichen F, Mayer HM
Placing a bone graft more posteriorly may reduce the risk of pedicle screw breakage: analysis of an unexpected case of pedicle screw breakage.
J Biomech. 1998 Aug;31(8):763-7

Eisenschenk A, Lautenbach M, Rohlmann A
[Free vascularized bone transplantation in the extremities]
Orthopade. 1998 Jul;27(7):491-500

Wolf S, Janousek A, Pfeil J, Veith W, Haas F, Duda G, Claes L
The effects of external mechanical stimulation on the healing of diaphyseal osteotomies fixed by flexible external fixation.
Clin Biomech (Bristol, Avon). 1998 Jun;13(4-5):359-364

Duda GN, Kirchner H, Wilke HJ, Claes L
A method to determine the 3-D stiffness of fracture fixation devices and its application to predict inter-fragmentary movement.
J Biomech. 1998 Mar;31(3):247-52

Duda GN, Eckert-Hubner K, Sokiranski R, Kreutner A, Miller R, Claes L
Analysis of inter-fragmentary movement as a function of musculoskeletal loading conditions in sheep.
J Biomech. 1998 Mar;31(3):201-10

Rohlmann A, Bergmann G, Graichen F, Mayer HM
Influence of muscle forces on loads in internal spinal fixation devices.
Spine (Phila Pa 1976). 1998 Mar 1;23(5):537-42

Weiler A, Hoffmann RF, Stahelin AC, Bail HJ, Siepe CJ, Sudkamp NP
Hamstring tendon fixation using interference screws: a biomechanical study in calf tibial bone.
Arthroscopy. 1998 Jan-Feb;14(1):29-37

Weiler A, Windhagen HJ, Raschke MJ, Laumeyer A, Hoffmann RF
Biodegradable interference screw fixation exhibits pull-out force and stiffness similar to titanium screws.
Am J Sports Med. 1998 Jan-Feb;26(1):119-26

Weiler A, Hoffmann R, Stähelin A, Bail H, Raschke M, Südkamp NP
Semitendinosus graft fixation with bioabsorbable interference screws.
J Bone Joint Surg Am Orthop Trans 1998;21:1062-1063

Weiler A, Peine R, Pashmineh-Azar R, Unterhauser F, Hoffmann R
Tendon to bone healing under direct interference screw fixation in a sheep model.
Arthroscopy 1998;14:437-438

Weiler A, Scheffler S, Göckenjan A, Südkamp N, Hoffmann R
Different hamstring tendon graft fixation techniques under incremental cyclic loading conditions
Arthroscopy 1998;14:425-426

Weiler A, Stähelin AC, Hoffmann-RFG, Südkamp NP
Biodegradierbare Interferenzschrauben in der Kreuzbandchirurgie
OP Journal 1998;14:278-284

Schmidmaier G, Raschke M, Stemberger A, Bail H, Schaser K, Haas NP
Entwicklung einer biodegradierbaren Polylaktid-Beschichtung für Marknägel mit Wachstumsfaktoren (IGF-I und TGF-ß).
Unfallchirurg 1998;274 Suppl:661-662

Weiler A, Hoffmann R, Peine R, Haas N
Die direkte knochenblockfreie Sehnenverankerung mit Interferenzschrauben beim Kreuzbandersatz in-vivo.
Unfallchirurg 1998;272 Suppl:706-708

Schaser K, Schewior L, Raschke M, Kroppenstedt S, Menger M, Mittlmeier T
Analyse der Mikrozirkulation nach traumatischem, geschlossenen Weichteilschaden.
Unfallchirurg 1998;272 Suppl:682-684

Schewior L, Schaser K, Vollmar B, Duda G, Hoffmann J, Mittlmeier T
Protektion der Mikrozirkulation nach schwerem geschlossenem Weichteiltrauma durch i.v. Infusion hyperosmolarer-hyperonkotischer Lösung.
Unfallchirurg 1998;272 Suppl:678-679

Duda GN, Claes L, Haas N
Rahmenbedingungen der Frakturheilung: Einfluß der muskuloskelettalen Belastung auf die Spaltbewegung.
Unfallchirurg 1998;272 Suppl:633-634

Heller M, Duda G, Claes L
Femoral strain distribution under complex thigh muscle loading during gait.
J Biomech 1998;31 Suppl.:147

Schwager T, Poeschel T
Coefficient of normal restitution of viscous particles and cooling rate of granular gases.
Phys Rev E 1998;57:650-654

Buchholtz V, Poeschel T
Interaction of a granular stream with an obstacle.
Granular Matter 1998;1:33-41

Windhagen H, Bail H, Kolbeck S, Weiler A, Blaschke R, Raschke M
Bone regenerate strength can be quantitatively assesses with in-vivo torsional stiffness measurements.
J Bone Joint Surg Am Orthop Trans 1998;21:1081-1082 

Duda GN, Schneider E, Chao EY
Internal forces and moments in the femur during walking.
J Biomech. 1997 Sep;30(9):933-41

Rohlmann A, Bergmann G, Graichen F, Weber U
Comparison of loads on internal spinal fixation devices measured in vitro and in vivo.
Med Eng Phys. 1997 Sep;19(6):539-46

Bergmann G, Graichen F, Rohlmann A, Linke H
Hip joint forces during load carrying.
Clin Orthop Relat Res. 1997 Feb;(335):190-201

Rohlmann A, Bergmann G, Graichen F
Loads on an internal spinal fixation device during walking.
J Biomech. 1997 Jan;30(1):41-7

Wulz C, Rohlmann A, Kraft M, Boenick U
[Analysis of load studies of the spine]
Biomed Tech (Berl). 1997;42 Suppl:151-2

Duda GN, Elias JJ, Valdevit A, Chao EY
Locking strength of Morse tapers used for modular segmental bone defect replacement prostheses.
Biomed Mater Eng. 1997;7(4):277-84

Wildemann B, Reichert H, Bicker G
Embryonic brain tract formation in Drosophila melanogaster.
Dev Genes Evol. 1997;206(8):536-40 

Duda GN, Brand D, Freitag S, Lierse W, Schneider E
Variability of femoral muscle attachments.
J Biomech. 1996 Sep;29(9):1185-90

Rohlmann A, Riley LH, Bergmann G, Graichen F
In vitro load measurement using an instrumented spinal fixation device.
Med Eng Phys. 1996 Sep;18(6):485-8

Rohlmann A, Calisse J, Bergmann G, Radvan J, Mayer HM
Clamping stiffness and its influence on load distribution between paired internal spinal fixation devices.
J Spinal Disord. 1996 Jun;9(3):234-40

Graichen F, Bergmann G, Rohlmann A
Patient monitoring system for load measurement with spinal fixation devices.
Med Eng Phys. 1996 Mar;18(2):167-74

Duda GN, Chao EYS, Grabowski JJ, Taswell HF
Testing methods for mechanical properties of fibrin glue.
J Appl Biomater. 1996;4:341-346 

Rohlmann A, Bergmann G, Graichen F, Mayer HM
Telemeterized load measurement using instrumented spinal internal fixators in a patient with degenerative instability.
Spine (Phila Pa 1976). 1995 Dec 15;20(24):2683-9

Bergmann G, Kniggendorf H, Graichen F, Rohlmann A
Influence of shoes and heel strike on the loading of the hip joint.
J Biomech. 1995 Jul;28(7):817-27

Bergmann G, Graichen F, Rohlmann A
Is staircase walking a risk for the fixation of hip implants?
J Biomech. 1995 May;28(5):535-53

Rohlmann A, Eick O, Bergmann G, Graichen F
[In-vitro measurement of loading using an instrumented vertebral internal fixator]
Z Orthop Ihre Grenzgeb. 1995 Mar-Apr;133(2):136-40

Rohlmann A, Bergmann G, Graichen F, Weber U
In vivo measurement of implant loads in a patient with a fractured vertebral body.
Eur Spine J. 1995;4(6):347-53 

Graichen F, Bergmann G, Rohlmann A
[Telemetric transmission system for in vivo measurement of the stress load of an internal spinal fixator]
Biomed Tech (Berl). 1994 Oct;39(10):251-8

Rohlmann A, Bergmann G, Graichen F
A spinal fixation device for in vivo load measurement.
J Biomech. 1994 Jul;27(7):961-7

Calisse J, Rohlmann A, Bergmann G
[Effect of clamping tensile strength on load distribution in paired mounted spinal internal fixators]
Biomed Tech (Berl). 1994 May;39(5):113-6

Bergmann G, Graichen F, Rohlmann A
Hip joint loading during walking and running, measured in two patients.
J Biomech. 1993 Aug;26(8):969-90

Duda GN, Grabowski JJ, Berglund LJ, Schultz FM, Chao EYS
Critical stress distribution on the contact surface of Morse tapers subjected to static loading.
J Bone Joint Surg Am: Orthop Trans 1993;17:765

Rohlmann A, Eick O, Bergmann G, Graichen F
[Stress measurements with an instrumented internal spinal fixator]
Biomed Tech (Berl). 1993 Oct;38(10):255-9

Graichen F, Bergmann G
Four-channel telemetry system for in vivo measurement of hip joint forces.
J Biomed Eng. 1991 Sep;13(5):370-4

Duda G, Eng HJ, Munter L, Boenick U
[Analysis of construction related wear characteristics of different hip joint endoprostheses]
Biomed Tech (Berl). 1990;35 Suppl 3:42-3

Bergmann G, Rohlmann A, Graichen F
[In vivo measurement of hip joint stress. 1. Physical therapy]
Z Orthop Ihre Grenzgeb. 1989 Nov-Dec;127(6):672-9

Graichen F, Bergmann G
[A telemetric transmission system for in vivo measuring of hip joint force with instrument-implanted prostheses]
Biomed Tech (Berl). 1988 Dec;33(12):305-12

Rohlmann A, Bergmann G
[Non-linear finite-element model for the determination of interface stresses in total hip prostheses]
Biomed Tech (Berl). 1988 Apr;33(4):77-83

Bergmann G, Graichen F, Siraky J, Jendrzynski H, Rohlmann A
Multichannel strain gauge telemetry for orthopaedic implants.
J Biomech. 1988;21(2):169-76

Rohlmann A, Cheal EJ, Hayes WC, Bergmann G
A nonlinear finite element analysis of interface conditions in porous coated hip endoprostheses.
J Biomech. 1988;21(7):605-11

Rohlmann A, Mössner U, Bergmann G, Hees G, Kölbel R
Effects of stem design and material properties on stresses in hip endoprostheses.
J Biomed Eng. 1987 Jan;9(1):77-83

Rohlmann A, Basli A, Bergmann G
[Stress on the elbow joint following alloplastic joint replacement]
Biomed Tech (Berl). 1986 Dec;31(12):293-302

Rohlmann A, Basli K, Bergmann G
[Analysis of the tension of the elbow joint before and after resection of the radius head]
Biomed Tech (Berl). 1986 Oct;31(10):230-9

Rohlmann A, Siraky J
[Reproducibility of surface measurements of the back using the opTRImetric method]
Z Orthop Ihre Grenzgeb. 1985 Mar-Apr;123(2):205-12

Bergmann G, Siraky J, Rohlmann A, Koelbel R
A comparison of hip joint forces in sheep, dog and man.
J Biomech. 1984;17(12):907-21

Rohlmann A, Mössner U, Eberlein R, Bergmann G, Kölbel R
[Stress analysis of the shoulder blade following shoulder joint replacement]
Biomed Tech (Berl). 1983 Oct;28(10):224-34

Rohlmann A, Mössner U, Bergmann G, Hees G, Kölbel R
[Stresses on the femur following hip joint replacement]
Z Orthop Ihre Grenzgeb. 1983 Jan-Feb;121(1):47-57

Rohlmann A, Mössner U, Bergmann G, Kölbel R
Finite-element-analysis and experimental investigation in a femur with hip endoprosthesis.
J Biomech. 1983;16(9):727-42

Rohlmann A, Mössner U, Hees G, Bergmann G, Kölbel R
[The stress on the femur, cement and implant following implantation of a hip prosthesis]
Biomed Tech (Berl). 1982 Dec;27(12):291-302

Rohlmann A, Mössner U, Bergmann G, Kölbel R
Finite-element-analysis and experimental investigation of stresses in a femur.
J Biomed Eng. 1982 Jul;4(3):241-6

Rohlmann A, Bergmann G, Kölbel R
[The stresses in femur (author's transl)]
Z Orthop Ihre Grenzgeb. 1981 Apr;119(2):163-6

Kölbel R, Bergmann G, Rohlmann A
[Patho-mechanics of the shoulder]
Aktuelle Probl Chir Orthop. 1981;20:14-22

Rohlmann A, Bergmann G, Kölbel R
[The stresses in femur. I. Intact femur without consideration of the iliotibial tract (author's transl)]
Z Orthop Ihre Grenzgeb. 1980 Dec;118(6):897-904

Rohlmann A, Bergmann G, Kölbel R
[Finite element analysis, its limitations and the relevance of its results to orthopaedic surgery as shown by simultaneous experimental measurements (author's transl)]
Z Orthop Ihre Grenzgeb. 1980;118(1):122-31

Zilch H, Rohlmann A, Bergmann G, Kölbel R
Material properties of femoral cancellous bone in axial loading. Part II: Time dependent properties.
Arch Orthop Trauma Surg. 1980;97(4):257-62

Rohlmann A, Zilch H, Bergmann G, Kölbel R
Material properties of femoral cancellous bone in axial loading. Part I: Time independent properties.
Arch Orthop Trauma Surg. 1980;97(2):95-102 

Bergmann G, Kölbel R, Rohlmann A, Rauschenbach N
[Walking with walking aids. III. Control and training of partial weightbearing by means of instrumented crutches (author's transl)]
Z Orthop Ihre Grenzgeb. 1979 Jun;117(3):293-300

Kölbel R, Bergmann G, Rohlmann A
[A technique for reproducible roentgenograms of the intercondylar sulcus for the study of the femoropatellar (author's transl)]
Z Orthop Ihre Grenzgeb. 1979 Feb;117(1):60-6

Zilch H, Rohlmann A, Kölbel R, Bergmann G
[Mechanical response of femur spongiosa tissue in axial compression]
Hefte Unfallheilkd. 1979;138:377-81 

Rohlmann A, Kölbel R, Bergmann G
[The stress on the anchoring zone in artificial hip joints. Mathematical and experimental analysis (proceedings)]
Z Orthop Ihre Grenzgeb. 1978 Aug;116(4):590-1

Kölbel R, Bergmann G, Rohlmann A, Rauschenbach N
[An experimental model for Wolff's law]
Z Orthop Ihre Grenzgeb. 1978 Aug;116(4):575-6

Bergmann G, Kölbel R, Rauschenbach N, Rohlmann A
[Walking with canes and forearm-crutches (author's transl)]
Z Orthop Ihre Grenzgeb. 1978 Feb;116(1):106-13

Kölbel R, Rohlmann A, Bergmann G, Friedebold G
[Critical comment on the work of G. Ritter et al.: "Elastic strapping of hip joint prosthesis". (Arch. orthop. Unfall-Chir. 86, 1-14 (1976))]
Arch Orthop Unfallchir. 1977 Aug 26;89(2):245-7

Bergmann G, Kölbel R, Rauschenbach N, Rohlmann A
[Walking with canes and forearm-crutches. I. Reduction of loads at the hip and proximal end of the femur by one sided use of cane/crutch (author's transl)]
Z Orthop Ihre Grenzgeb. 1977 Apr;115(2):174-82

Bergmann G, Kölbel R, Rohlmann A
[Mechanical properties of bonding between cancellous bone and polymethylmetacrylate. IV. Tensile fatigue strength (author's transl)]
Arch Orthop Unfallchir. 1977 Feb 28;87(2):223-33

Rohlmann A, Kölbel R, Bergmann G
[Critical observations and the loads on femoral head replacement and the femoral bone calculated for a support in 3 points (author's transl)]
Z Orthop Ihre Grenzgeb. 1977 Feb;115(1):89-95

Kölbel R, Rohlmann A, Bergmann G, Friedebold G
[Shoulder joint replacement-using the Kölbel-Friedebold method]
Aktuelle Probl Chir Orthop. 1977;1:50-63

Kölbel R, Bergmann G, Böhm E
[Microradiography and macroradiography with an industrial X-ray inspection-apparatus (author's transl)]
Z Orthop Ihre Grenzgeb. 1975 Oct;113(5):886-90