1 Philippine General Hospital, Manila, Philippines.
2 St. Luke's Medical Center Global City, Taguig City, Philippines; National Kidney and Transplant Institute, Quezon City, Philippines; College of Public Health, University of the Philippines, Manila, Philippines.
3 Institute of Medical Science, Temerty Faculty of Medicine, University of Toronto, Toronto, Ontario, Canada; Victor R. Potenciano Medical Center, Mandaluyong City, Philippines. Electronic address: dane.sacdalan@mail.utoronto.ca.
4 Philippine General Hospital, Manila, Philippines; ManilaMed (Medical Center Manila), Manila, Philippines; University of the Philippines College of Medicine, Manila, Philippines.
5 Metro Davao Medical and Research Center, Davao City, Philippines.
6 Cordillera Hospital of the Divine Grace, La Trinidad, Benguet, Philippines.
7 St. Luke's Medical Center Quezon City, Quezon City, Philippines; Lung Center of the Philippines, Quezon City, Philippines.
8 Philippine General Hospital, Manila, Philippines; University of the Philippines College of Medicine, Manila, Philippines.
9 Philippine General Hospital, Manila, Philippines; ManilaMed (Medical Center Manila), Manila, Philippines.