Agarwal Rachna, Radhakrishnan Gita, Mohanty Debajyoti
Department of Obstetrics and Gynecology, University College of Medical Sciences and Guru Teg Bahadur Hospital, Delhi, India.
Am J Obstet Gynecol. 2010 Oct;203(4):413.e1-2. doi: 10.1016/j.ajog.2010.04.013.