Choudhury, N., Sharma, B.K., Kanungo, B.K., Yadav, R. and Rahman, H. 2017. Assessment of Doppler velocimetry versus nonstress test in antepartum surveillance of high risk pregnancy. International Journal of Reproduction, Contraception, Obstetrics and Gynecology. 6, 2 (Jan. 2017), 663–670. DOI:https://doi.org/10.18203/2320-1770.ijrcog20170403.