Duangta Graipaspong. (1999) Mental health status and its correlates among Thai workers attending physical examination at Siriraj hospital prior to working abroad. Mahidol University:ม.ป.ท.Duangta Graipaspong. 1999. Mental health status and its correlates among Thai workers attending physical examination at Siriraj hospital prior to working abroad. ม.ป.ท.:Mahidol University;Duangta Graipaspong. Mental health status and its correlates among Thai workers attending physical examination at Siriraj hospital prior to working abroad. ม.ป.ท.:Mahidol University, 1999. Print.