1. Maternal Fetal Medicine Division, Obstetrics and Gynecology Department, Faculty of Medicine Universitas Sebelas Maret, Dr. Moewardi General Hospital, Surakarta, Indonesia
2. Maternal Fetal Medicine Division, Obstetrics and Gynecology Department, Faculty of Medicine Universitas Airlangga, Dr.Soetomo Hospital, Universitas Airlangga Hospital, Surabaya, Surakarta, Indonesia
3. Obstetrics and Gynaecology Department, Lyell-McEwin Hospital, the University of Adelaide, Adelaide, Australia