Akbar M.I.A., Department of Obstetrics and Gynecology, Faculty of Medicine, Universitas Airlangga, Universitas Airlangga Hospital, Surabaya, Indonesia; Irwinda R., Department of Obstetrics and Gynecology, Faculty of Medicine, Universitas Indonesia, Dr. Cipto Mangunkusumo General Hospital, Jakarta, Indonesia; Dewantiningrum J., Department of Obstetrics and Gynecology, Faculty of Medicine, Universitas Diponegoro, Dr. Kariadi General Hospital, Semarang, Indonesia; Bernolian N., Department of Obstetrics and Gynecology, Faculty of Medicine, Universitas Sriwijaya, Dr. Muhammad Hoesin General Hospital, Palembang, Indonesia; Sitepu M., Department of Obstetrics and Gynecology, Faculty of Medicine, Universitas Sumatera Utara, Dr. H. Adam Malik General Hospital, Medan, Indonesia; Chalid M.T., Department of Obstetrics and Gynecology, Faculty of Medicine, Universitas Hassanudin, Dr. Wahidin Sudirohusodo General Hospital, Makassar, Indonesia; Noryanto M., Department of Obstetrics and Gynecology, Faculty of Medicine, Universitas Brawijaya, Dr. Saiful Anwar General Hospital, Malang, Indonesia; Yeni C.M., Department of Obstetrics and Gynecology, Faculty of Medicine, Universitas Syiah-Kuala, Dr. Zainoel Abidin General Hospital, Aceh, Indonesia; Wantania J., Department of Obstetrics and Gynecology, Faculty of Medicine, Universitas Sam Ratulangi, Prof. Dr. Kandou General Hospital, Manado, Indonesia; Budayasa A.A.G.R., Department of Obstetrics and Gynecology, Sanjiwani General Hospital, Gianyar Bali, Indonesia; Aziz M.A., Department of Obstetrics and Gynecology, Faculty of Medicine, Universitas Padjajaran, Dr. Hasan Sadikin General Hospital, Bandung, Indonesia