Surabenchawong, Gunthaporn. “Incidence of Patent Ductus Arteriosus that Related to Successful Indomethacin Treatment in TAKSIN HOSPITAL”. Vajira Medical Journal : Journal of Urban Medicine 48, no. 2 (September 22, 2011): 67–78. accessed April 22, 2026. https://he02.tci-thaijo.org/index.php/VMED/article/view/229.