[1] Mahidol Univ, Fac Pharm, Philosophy Program Social Econ & Adm Pharm, Dept Pharm, Bangkok 10400, Thailand
[2] Minist Publ Hlth, Thai Tradit Med Res Inst, Dept Thai Tradit & Alternat Med, Nonthaburi 11000, Thailand
[3] Mahidol Univ, Hlth Technol Assessment Grad Program, Bangkok 10400, Thailand
[4] Mahidol Univ, Dept Pharm, Social & Adm Pharm Excellence Res SAPER Unit, Fac Pharm, Bangkok 10400, Thailand
[5] Coll Pharmaceut & Hlth Consumer Prot Thailand, Bangkok 10330, Thailand
[6] Univ Nottingham, Sch Pharm, Nottingham NG7 2RD, England