Thangwijitra, Surangtip, Supat Sinawat, Kanok Seejorn, and Thanida Pongsritasana. 2013. “Comparison of Intrauterine Tuboperitoneal Insemination and Intrauterine Insemination on Pregnancy Rate : Preliminary Report”. Srinagarind Medical Journal 25 (4):298-305. https://li01.tci-thaijo.org/index.php/SRIMEDJ/article/view/12950.