Kiriwat, Orawan, and Somsin Petyim. “The Study of Cycle Control, Side Effects and Acceptability of Transdermal Patch Use in Thai Women in Siriraj Hospital”. Siriraj Medical Journal 60, no. 6 (November 1, 2008): 324–329. accessed September 21, 2026. https://he02.tci-thaijo.org/index.php/sirirajmedj/article/view/246500.