Tresukosol, Damras, Odthon Sriyuthasak, and Vichian Thongtang. “Amlodipine and Hydrochlorothiazide for Isolated Systolic Hypertension in the Thai Elderly”. Siriraj Medical Journal 57, no. 9 (September 1, 2005): 374–379. accessed September 20, 2026. https://he02.tci-thaijo.org/index.php/sirirajmedj/article/view/245611.