1. Graduate School, University of the Philippines, Los Banos College, Los Banos, Laguna 4030, Philippines
2. Research and Biotechnology Division, Manila HealthTek Inc., 109 Gil Fernando Ave, Marikina 1800, Philippines
3. Biological Research and Services Laboratory, Natural Sciences Research Institute, University of the Philippines Diliman, Quezon, Metro Manila 1104, Philippines
4. Microbiology Division, Institute of Biological Sciences, University of the Philippines, Los Banos College, Los Banos, Laguna 4031, Philippines