Gupta, R., Mukherjee, P., Kaur, H. and Singhal, S. 2020. Role of cervicovaginal β-hCG in prediction of preterm delivery: a prospective observational study. International Journal of Reproduction, Contraception, Obstetrics and Gynecology. 9, 9 (Aug. 2020), 3677–3682. DOI:https://doi.org/10.18203/2320-1770.ijrcog20203839.