Drupal-Bibcite0<style face="normal" font="default" size="100%">Glucosamine and chondroitin for knee osteoarthritis: a double-blind randomised placebo-controlled clinical trial evaluating single and combination regimens</style><style face="normal" font="default" size="100%">Glucosamine and chondroitin for knee osteoarthritis: a double-blind randomised placebo-controlled clinical trial evaluating single and combination regimens</style>