1. The Graduate School, University of Santo Tomas, España Boulevard, Sampaloc, Manila 1008 Metro Manila, Philippines.
2. Research Center for the Natural and Applied Sciences, University of Santo Tomas, España Boulevard, Sampaloc, Manila 1008 Metro Manila, Philippines.
3. Department of Medical Technology, Faculty of Pharmacy, University of Santo Tomas, España Boulevard, Sampaloc, Manila 1008 Metro Manila, Philippines.
4. Department of Biochemistry, Faculty of Pharmacy, University of Santo Tomas, España Boulevard, Sampaloc, Manila 1008 Metro Manila, Philippines.