Glucosamine/chondroitin combined with exercise for the treatment of knee osteoarthritis: a preliminary study.
Messier SP, Mihalko S, Loeser RF, Legault C, Jolla J, Pfruender J, Prosser B, Adrian A, Williamson JD. Glucosamine/chondroitin combined with exercise for the treatment of knee osteoarthritis: a preliminary study. Osteoarthritis Cartilage. 2007 Nov; 15(11):1256-66.