Abd El Fattah, E. A. “Can Co-Enzyme Q10 Improve the Chances of Conception After the Age of 35?”. International Journal of Reproduction, Contraception, Obstetrics and Gynecology, vol. 6, no. 7, June 2017, pp. 2729-33, doi:10.18203/2320-1770.ijrcog20172902.