Tankul, A., and J. Prechapanich. “Comparison of Pregnancy Rate Following IUI between the Use of Husband’s Sperm and Donor’s Sperm in Siriraj Hospital”. Thai Journal of Obstetrics and Gynaecology, vol. 24, no. 3, Sept. 2016, pp. 175-83, doi:10.14456/tjog.2016.23.