title: Were the Effects of Glucosamine and Chondroitin on Knee Osteoarthritis Underestimated? Comment on the Article by Yang et al.
authors.affiliation: Xiangya Hospital, Central South University, Changsha, Hunan Province, China.
authors.forename: Chao
authors.initials: C
authors.lastname: Zeng
authors.affiliation: Central South University, Changsha, Hunan Province, China.
authors.forename: Jie
authors.initials: J
authors.lastname: Wei
authors.affiliation: Xiangya Hospital, Central South University, Changsha, Hunan Province, China.
authors.forename: Guang-hua
authors.initials: GH
authors.lastname: Lei
mesh_terms: D002807:Chondroitin / Q000627:therapeutic use*; D019587:Dietary Supplements; D005260:Female; D005944:Glucosamine / Q000627:therapeutic use*; D006801:Humans; D008297:Male; D020370:Osteoarthritis, Knee / Q000188:drug therapy*
chemical_list: D002807:Chondroitin; D005944:Glucosamine