1. Department of Obstetrics and Gynecology, Medical Faculty of Universitas Sebelas Maret/Dr. Moewardi General Hospital, Jawa Tengah, Indonesia.
2. Medical Faculty Postgraduate Program, Universitas Sebelas Maret, Surakarta, Jawa Tengah, Indonesia.
3. Public Health Science Study Program, Postgraduate Program, Universitas Sebelas Maret, Surakarta, Jawa Tengah, Indonesia.
4. Doctoral Program in Medical Science, Postgraduate Program, Universitas Sebelas Maret, Surakarta, Jawa Tengah, Indonesia.
5. Department of Obstetrics and Gynecology, Medical Faculty of Universitas Sebelas Maret/Universitas Sebelas Maret Hospital, Jawa Tengah, Indonesia.