1. School of Medicine, Walailak University, Thasala, Nakhon Si Thammarat, Thailand
2. Walailak University Hospital, Thasala, Nakhon Si Thammarat, Thailand
3. School of Pharmacy, Walailak University, Thasala, Nakhon Si Thammarat, Thailand
4. Department of Pediatrics, King Chulalongkorn Memorial Hospital, Thai Red Cross, Bangkok, Thailand
5. Thasala Hospital, Thasala, Nakhon Si Thammarat, Thailand
6. School of Allied Health Sciences, Walailak University, Thasala, Nakhon Si Thammarat, Thailand
7. Medical Technology Program, Faculty of Science, Nakhon Phanom University, Nakhon Phanom, Thailand