1. Obstetrics and Gynecologic Department, Rumah Sakit Dokter Soetomo General Hospital, Surabaya, Jawa Timur, Indonesia.
2. Faculty of Medicine, Universitas Airlangga, Surabaya, Jawa Timur, Indonesia.
3. Acupuncture Research Laboratory in Health Services, Ministry of Health of the Republic of Indonesia, Surabaya, Jawa Timur, Indonesia.
4. Academy of Acupuncture Surabaya, Jawa Timur, Indonesia.