1. Researcher, International Health Policy Program, Ministry of Public Health, Mueang Nonthaburi, Thailand. Correspondence:
2. Medical Doctor, Department of Health, Ministry of Public Health, Mueang Nonthaburi, Thailand
3. Deputy Secretary-General, National Health Security Office, Bangkok, Thailand
4. Senior Advisor, International Health Policy Program, Ministry of Public Health, Mueang Nonthaburi, Thailand