Institution: | 1The Graduate School, University of Santo Tomas, Manila, Philippines.2Research Center for the Natural and Applied Sciences, University of Santo Tomas, Manila, Philippines.3University of Santo Tomas Hospital - Benavides Cancer Institute, Manila, Philippines.4Mariano Marcos Memorial Hospital and Medical Center, Batac, Ilocos Norte, Philippines.5College of Science, University of Santo Tomas, Manila, Philippines. |