1. Radiation Oncology Unit, Department of Radiology, Faculty of Medicine Vajira Hospital, Navamindradhiraj University, Bangkok, Thailand.
2. Health Intervention and Technology Assessment Program & Bureau of AIDS, TB and STIs, Department of Disease Control, Ministry of Public Health, Nonthaburi, Thailand.
3. Gynecologic Oncology Unit, Department of Obstetrics and Gynecology, Faculty of Medicine Vajira Hospital, Navamindradhiraj University, Bangkok, Thailand.
4. Clinical Epidemiology Unit, Faculty of Medicine Vajira Hospital, Navamindradhiraj University, Bangkok, Thailand.