Gupta, Neelam, Meenakshi Samariya, Devika Choudhary, Kanti Yadav, and Pushpa Kannoujiya. 2017. “Ultrasonographic Evaluation of First Trimester Bleeding Per Vaginum”. International Journal of Reproduction, Contraception, Obstetrics and Gynecology 5 (9):3085-87. https://doi.org/10.18203/2320-1770.ijrcog20162990.