Psychiatric screening in general practice in Italy. A validity study of the GHQ (General Health Questionnaire).
D000293:Adolescent; D000328:Adult; D000368:Aged; D005194:Family Practice; D006801:Humans; D007558:Italy; D008403:Mass Screening / Q000379:methods*; D001523:Mental Disorders / Q000517:prevention & control*; D008875:Middle Aged; D011795:Surveys and Questionnaires