Some methodological problems in clinical psychosomatic research with special reference to chest disease.
D000328:Adult; D000368:Aged; D006801:Humans; D008175:Lung Neoplasms; D008722:Methods; D008875:Middle Aged; D010551:Personality; D011446:Prospective Studies; D011594:Psychometrics; D011602:Psychophysiologic Disorders / Q000209:etiology*; D012189:Retrospective Studies; D013223:Statistics as Topic