Durongpisitkul, K. ., arupim . Soongswang, D. . Laohaprasitiporn, A. . Nana, T. . Nutakul, S. . Kongsereepongse, and N. . Limpimwong. “Transcatheter Closure of Atrial Septal Defects by AmplatzerTM Septal Occluder Instead of Open Heart Surgery”. Siriraj Medical Journal, vol. 51, no. 2, Feb. 1999, pp. 104-11, https://he02.tci-thaijo.org/index.php/sirirajmedj/article/view/246873.