1. Siriraj Hospital, Mahidol University, Bangkok, Thailand
2. Merck & Co., Inc, Rahway, NJ, USA
3. Ramathibodi Hospital, Mahidol University, Bangkok, Thailand
4. Department of Tropical Medicine, Mahidol University, Bangkok, Thailand
5. Mission Hospital, Bangkok, Thailand
6. OPEN Health, Parsippany, NJ, USA
7. MSD Thailand, Bangkok, Thailand