1 College of Medicine, University of the Philippines, Manila, Philippines.
2 Department of Radiation Oncology, Memorial Sloan Kettering Cancer Center, New York, NY, USA.
3 Cancer and Blood Specialists of Nevada, Las Vegas, NV, USA.
4 Division of Gynecologic Oncology, Department of Obstetrics and Gynecology, Philippine General Hospital, Manila, Philippines.
5 Division of Medical Oncology, Department of Internal Medicine, Philippine General Hospital, Manila 1000, Philippines. Electronic address: dlsacdalan1@up.edu.ph.