Sudhindra Mohan Bhattacharya1,2,3, Atreyee Basu4. 1. Department of Obstetrics and Gynaecology, S. C. Das Memorial Medical and Research Center, 52 Jodhpur Park, Kolkata, 700068 India. 2. 2KPC Medical College, Raja S.C. Mullick Road, Jadavpur, Kolkata, 700032 India. 3. Kolkata, India. 4. 3Department of Pathology, New York University Langone Medical Center and School of Medicine, 550 First Avenue, New York, NY 10016 USA.