title: [Methods of modern clinical research design].
authors.affiliation: Center for Clinical Epidemical Research, Third Hospital, Beijing University, Beijing 100083, China
authors.forename: Yi-ming
authors.initials: YM
authors.lastname: Zhao
authors.forename: Jing-qiao
authors.initials: JQ
authors.lastname: Lu
authors.forename: Li
authors.initials: L
authors.lastname: Zeng
mesh_terms: D015510:Clinical Medicine; D006801:Humans; D012107:Research Design