Cardona Maya, W. D., and S. S. du Plessis. “Human Spaceflight: To Infertility and Beyond”. International Journal of Reproduction, Contraception, Obstetrics and Gynecology, vol. 8, no. 12, Nov. 2019, pp. 5068-9, doi:10.18203/2320-1770.ijrcog20195375.