Dr. Kaei Nasu is presently working as Professor in Division of Obstetrics and Gynecology at Oita University, Japan. He has received his MD and PhD from Oita University, Japan. He is Editorial board member in various international journals. He is honored with 13th Royan International Research Award in the year 2012. His research interests includes Endometriosis, Reproductive biology and Gynecologic oncology.