1. Faculty of Medicine Universitas Airlangga, Department Obstetrics and Gynecology, Universitas Airlangga Hospital, Dr. Soetomo General Academic Hospital, Surabaya, Indonesia
2. Faculty of Medicine Universitas Padjajaran, Department Obstetrics and Gynecology, Dr. Hasan Sadikin General Hospital, Bandung, Indonesia
3. Faculty of Medicine Universitas Hasanudin, Department Obstetrics and Gynecology, Dr. Wahidin Sudirohusodo General Hospital, Makassar, Indonesia
4. Faculty of Medicine Universitas Sebelas Maret, Department Obstetrics and Gynecology, Dr. Moewardi General Hospital, Surakarta, Indonesia
5. Department Obstetrics and Gynecology, Lyell McEwin Hospital, The University of Adelaide, Adelaide, South Australia