title: [The goal of scientific research can not be achieved in one step].
authors.forename: Qing-yu
authors.initials: QY
authors.lastname: Zeng
mesh_terms: D002681:China / Q000453:epidemiology; D006801:Humans; D020370:Osteoarthritis, Knee / Q000453:epidemiology / Q000517:prevention & control; D015995:Prevalence; D012307:Risk Factors