High-risk studies: the impact of research design on research results.
D000293:Adolescent; D002648:Child; D004777:Environment; D005819:Genetic Markers; D006801:Humans; D008393:Marriage; D001523:Mental Disorders / Q000175:diagnosis / Q000235:genetics*; D012107:Research Design; D012307:Risk Factors
D005819:Genetic Markers