Thangwijitra, S., S. Sinawat, K. Seejorn, and T. Pongsritasana. “Comparison of Intrauterine Tuboperitoneal Insemination and Intrauterine Insemination on Pregnancy Rate : Preliminary Report”. Srinagarind Medical Journal, vol. 25, no. 4, Oct. 2013, pp. 298-05, https://li01.tci-thaijo.org/index.php/SRIMEDJ/article/view/12950.