Minh Tam Le1, Viet Nguyen Sa Le2, Dinh Duong Le3, Vu Quoc Huy Nguyen1, Chen Chen4, Ngoc Thanh Cao1
1Department of OBGYN Hue University of Medicine and Pharmacy, Hue University Hue Vietnam
2Department of OBGYN Hue Central Hospital Hue Vietnam
3Department of Public Health Hue University of Medicine and Pharmacy Hue University Hue Vietnam
4SBMS, Faculty of Medicine University of Queensland Brisbane Queensland Australia