title: Twin studies of schizophrenia.
mesh_terms: D004200:Diseases in Twins; D005260:Female; D006801:Humans; D011247:Pregnancy; D012107:Research Design / Q000592:standards; D012559:Schizophrenia / Q000235:genetics*; D014429:Twins, Dizygotic; D014430:Twins, Monozygotic