Sethi, P. D., Goyal, N., & Garg, A. (2017). Ultrasonography: a diagnostic choice to localise intra uterine contraceptive devices. International Journal of Reproduction, Contraception, Obstetrics and Gynecology, 5(9), 2964–2967. https://doi.org/10.18203/2320-1770.ijrcog20162699