Case self-selection and psychosomatic research.
D001795:Blood Pressure Determination; D004812:Epidemiologic Methods; D006801:Humans; D006973:Hypertension / Q000175:diagnosis; D007046:Hysteria / Q000175:diagnosis; D009497:Neurotic Disorders / Q000175:diagnosis; D010552:Personality Assessment; D011581:Psychological Tests; D011611:Psychosomatic Medicine; D014852:Wales