1. Institute of Chemistry, University of the Philippines Los Baños, Los Baños, Laguna, Philippines
2. College of Arts and Sciences, Isabela State University, Echague, Isabela, Philippines
3. Institute of Mathematical Sciences and Physics, University of the Philippines Los Baños, Los Baños, Laguna, Philippines
4. Molecular Diagnostics and Cellular Therapeutics Laboratory, Lung Center of the Philippines, Quezon City, Philippines
5. Department of Chemistry, University of California Davis, Davis, California, USA