1. Department of Obstetrics and Gynecology, Unggul Karsa Medika Hospital, Maranatha Christian University, Bandung, West Java 40218, Indonesia
2. Undergraduate Program in Medicine, Faculty of Medicine, Maranatha Christian University, Bandung, West Java 40164, Indonesia
3. Department of Anatomy, Faculty of Medicine, Maranatha Christian University, Bandung, West Java 40164, Indonesia