1 College of Medicine, University of the Philippines, Manila, Philippines.
2 Department of Medicine, Philippine General Hospital, Manila, Philippines.
3 Division of Endocrinology, Diabetes and Metabolism, Department of Medicine, Philippine General Hospital, Manila, Philippines.
4 Division of Endocrinology, Diabetes and Metabolism, Department of Medicine, Philippine General Hospital, Manila, Philippines; Department of Pharmacology and Toxicology, College of Medicine, University of the Philippines, Manila 1000, Philippines. Electronic address: cajimeno@up.edu.ph.