Kaewanuchit, C., Kaewanuchit, C. and Kaewanuchit, A. (2011) “Progression of Hormonal Male Contraception”, Vajira Medical Journal : Journal of Urban Medicine, 54(1), pp. 89–94. available at: https://he02.tci-thaijo.org/index.php/VMED/article/view/439 (accessed: 20 September 2026).