Patel, Dhaval K., and Darshit G. Prajapati. 2018. “Study the Accuracy of Salivary Ferning Test As a Predictor of Ovulation”. International Journal of Reproduction, Contraception, Obstetrics and Gynecology 7 (7):2699-2705. https://doi.org/10.18203/2320-1770.ijrcog20182866.