title: DIFFICULTIES ENCOUNTERED IN ASSESSING FAMILY ATTITUDES.
mesh_terms: D001290:Attitude; D004381:Duodenal Ulcer; D005190:Family; D006801:Humans; D011581:Psychological Tests; D012106:Research; D012565:Schizophrenic Psychology
keywords: DUODENAL ULCER; FAMILY; PSYCHOLOGICAL TESTS; SCHIZOPHRENIC PSYCHOLOGY