title: Risk factors of knee osteoarthritis--excellent evidence but little has been done.
authors.forename: W
authors.initials: W
authors.lastname: Zhang
mesh_terms: D000368:Aged; D015992:Body Mass Index; D005260:Female; D006801:Humans; D008297:Male; D008875:Middle Aged; D009765:Obesity; D020370:Osteoarthritis, Knee / Q000453:epidemiology* / Q000517:prevention & control; D012307:Risk Factors