title: [Problems related to the epidemiological studies on acquired immune-deficiency syndrome in China].
authors.forename: Cheng-yi
authors.initials: CY
authors.lastname: Qu
mesh_terms: D000163:Acquired Immunodeficiency Syndrome / Q000453:epidemiology* / Q000517:prevention & control; D002681:China / Q000453:epidemiology; D016021:Epidemiologic Studies; D006801:Humans