1. Institute of Chemistry, University of the Philippines, Los Baños, Philippines 4031
2. Department of Chemistry, University of California, Davis, California 95616, United States
3. Lung Center of the Philippines, Quezon City, Philippines 1100
4. Department of Biochemistry and Molecular Biology, College of Medicine, University of the Philippines Manila, Philippines 1000
5. Institute of Mathematical Sciences and Physics, University of the Philippines, Los Baños, Philippines 4031