title: Formal thought disorder in schizophrenics and their twins.
mesh_terms: D004200:Diseases in Twins; D005260:Female; D006801:Humans; D011247:Pregnancy; D011569:Psychiatric Status Rating Scales; D012559:Schizophrenia / Q000235:genetics*; D012565:Schizophrenic Psychology; D013850:Thinking; D014429:Twins, Dizygotic; D014430:Twins, Monozygotic