1. a Boromarajonani College of Nursing , Bangkok, Bangkok 10400 , Thailand
2. b Faculty of Nursing , Mahidol University , Bangkok Noi, Bangkok 10700 , Thailand
3. c Faculty of Nursing, HRH Princess Chulabhorn College of Medical Science, Chulabhorn Royal Academy , Bangkok, Bangkok 10210 , Thailand
4. d Department of Mental Health, Ministry of Public Health, Rajanukul Institute , Nonthaburi, Nonthaburi 11000 , Thailand
5. e School of Nursing , Johns Hopkins University , Baltimore, Maryland 21205-2110 , United States