Charoensak, S. ., S. Chantarujikapong, S. . Cherdsuwan, and K. . Ontale. “Unit Cost of Major Depressive Disorder in Psychiatric Ward, Siriraj Hospital”. Siriraj Medical Journal, vol. 57, no. 6, June 2005, pp. 177-81, https://he02.tci-thaijo.org/index.php/sirirajmedj/article/view/245594.