Silpakit, Orawan, Paitoon Samuthrsindh, and Rossukon Chomchuen. “Agreement and correlation between PHQ-9 and HAMD in patients in remission or with mild symptoms of major depressive disorder”. Academic Psychiatry and Psychology Journal 38, no. 3 (November 17, 2022): 171–183. accessed September 4, 2026. https://he01.tci-thaijo.org/index.php/APPJ/article/view/259122.