1. Yogyakarta Midwifery Academy, Jalan Parangtritis Km 6, Sewon, Bantul, Yogyakarta Special Region 55188, Indonesia
2. Division of Fertility, Endocrinology and Reproduction, Obstetric and Ginaecology Laboratory, Saiful Anwar General Hospital, Faculty of Medicine, Brawijaya University, Malang, East Java, Indonesia
3. Microbiology Laboratory, Faculty of Medicine, Brawijaya University, Malang, East Java, Indonesia