Affiliation: Department of Medicine, Section of Infectious Diseases, University of the Philippines Manila, University of the Philippines-Philippine General Hospital, Manila, Philippines.
Affiliation: Tohoku University Graduate School of Medicine, Sendai, Japan; Tohoku-RITM Collaborating Research Center on Emerging and Reemerging Infectious Diseases, Muntinlupa City, Metro Manila, Philippines.
Affiliation: Section of Infectious Diseases, Department of Medicine, University of the Philippines Manila - Philippine General Hospital, Manila, Philippines.