Wongwananuruk, T. ., P. . Laokirkkiat, and J. . Prechapanich. “Heterotopic Pregnancy Following Tuboplasty and Ovulation Induction by Clomiphene Citrate and Timed Intrauterine Insemination: Case Report”. Siriraj Medical Journal, vol. 59, no. 6, Nov. 2007, pp. 311-3, https://he02.tci-thaijo.org/index.php/sirirajmedj/article/view/246235.