1. Gynecologic Infectious Diseases and Female Sexually Transmitted Disease Unit, Department of Obstetrics and Gynecology, Bankok , Thailand
2. Gynecologic Infectious Diseases and Female Sexually Transmitted Disease Unit, Department of Obstetrics and Gynecology, Bangkok 10120, Thailand
3. Department of Microbiology, Siriraj Hospital, Mahidol University, Bangkok 10070, Thailand
4. Bangrak Hospital, Bangkok 10120, Thailand