Sharma, B., Bhardwaj, N., Gupta, S., Gupta, P. K., Verma, A., & Malviya, K. (2012). Association of Umbilical Coiling Index by Colour Doppler Ultrasonography at 18–22 Weeks of Gestation and Perinatal Outcome. Springer-Verlag.

Sharma, Bindu, Neelam Bhardwaj, Shashi Gupta, Pradeep Kumar Gupta, Asha Verma, and Kusumlata Malviya. Association of Umbilical Coiling Index By Colour Doppler Ultrasonography At 18–22 Weeks of Gestation and Perinatal Outcome. Springer-Verlag, 2012.

Sharma, Bindu, et al. Association of Umbilical Coiling Index By Colour Doppler Ultrasonography At 18–22 Weeks of Gestation and Perinatal Outcome. Springer-Verlag, 2012.