Punchanit Nuntatikul และ Prathurng Hongsranagon. (2009) Prevalence of and factors associated with depression in Thai adult general OPD patients at Phanomprai Hospital, Roi-Et province, Thailand. Chulalongkorn University:ม.ป.ท.Punchanit Nuntatikul และ Prathurng Hongsranagon. 2009. Prevalence of and factors associated with depression in Thai adult general OPD patients at Phanomprai Hospital, Roi-Et province, Thailand. ม.ป.ท.:Chulalongkorn University;Punchanit Nuntatikul และ Prathurng Hongsranagon. Prevalence of and factors associated with depression in Thai adult general OPD patients at Phanomprai Hospital, Roi-Et province, Thailand. ม.ป.ท.:Chulalongkorn University, 2009. Print.