[1] Chulalongkorn Univ, Fac Nursing, Borommaratchachonnani Srisataphat Bldg,Rama 1 Rd, Bangkok 10330, Thailand
[2] Indiana Univ, Sch Nursing, FINE Ctr, Indianapolis, IN 46204 USA
[3] Univ Florida, Coll Nursing, Gainesville, FL 32611 USA
[4] Dalian Med Univ, Sch Nursing, Dalian, Peoples R China