Affiliation: | 1. Philippine General Hospital‐University of the Philippines, Manila, Philippines;2. Maharaj Nakorn Chiang Mai Hospital, Chiang Mai, Thailand;3. Jose R Reyes Memorial Medical Center, Manila, Philippines;4. Makati Medical Center, Makati, Philippines;5. King Chulalongkorn Memorial Hospital, Bangkok, Thailand;6. Roche Products, Dee Why, Australia |