title: Use of control groups in family studies.
authors.forename: K S
authors.initials: KS
authors.lastname: Kendler
mesh_terms: D015897:Comorbidity; D003866:Depressive Disorder / Q000453:epidemiology* / Q000235:genetics; D005190:Family; D006801:Humans; D012107:Research Design / Q000592:standards* / Q000706:statistics & numerical data; D012559:Schizophrenia / Q000453:epidemiology*