Shaheen, A., Chauhan, N., Alka, A. and Nautiyal, R. (2022) “An observational study of aetiology of preterm labour in a tertiary health care centre”, International Journal of Reproduction, Contraception, Obstetrics and Gynecology, 11(7), pp. 1970–1973. doi: 10.18203/2320-1770.ijrcog20221678.