TY - JOUR A1 - Piccinelli, M. A1 - Bisoffi, G. A1 - Bon, M. A1 - Cunico, L. A1 - Tansella, M. T1 - Validity and test-retest reliability of the Italian version of the 12-item General Health Questionnaire in general practice: A comparison between three scoring methods Y1 - 1993 DO - 10.1016/0010-440X(93)90048-9 VL - 34 IS - 3 ER -