1. Adam M (1991) Therapie der osteoarthrosis. Welche Wirkung haben gelatinepräparate? Therapiewoche 41:2458–2461
2. Arquer A, Pujol P (1996) Physical exercise in the elderly people. Selección 5(3):121–128
3. Bellamy N, Carette S, Ford PM et al (1992) Osteoarthritis antirehumatic drug trials. II.Tables for calculating sample size for clinical trials. J Rheumatol 19:444–450
4. Bellamy N, Carette S, Ford PM et al (1992) Osteoarthritis antirehumatic drug trials. III. Setting the delta for clinical trials-results of a consensus development (Delphi) exercise. J Rheumatol 19:451–457
5. Bellamy N, Buchanan WW, Goldsmith CH, Campbell J (1988) Validation study of WOMAC: a health status instrument for measuring clinically important patient relevant outcomes following total hip or knee arthroplasty in osteoarthritis. J Orthop Rheum 1:95–108