title: Research and statistics: study design and data sources.
authors.affiliation: The Johns Hopkins University School of Medicine, Baltimore, MD, USA.
authors.forename: Anne
authors.initials: A
authors.lastname: Palaia
mesh_terms: D000293:Adolescent; D003625:Data Collection; D003863:Depression / Q000175:diagnosis / Q000628:therapy; D006801:Humans; D012107:Research Design