[1] Katholieke Univ Leuven, Ctr Biomed Ethics & Law, Dept Publ Hlth & Primary Care, Leuven, Belgium
[2] Univ North Carolina Chapel Hill, Sch Nursing, Chapel Hill, NC USA
[3] Griffith Univ, Sch Nursing & Midwifery, Griffith, Qld, Australia
[4] Guangzhou Univ Chinese Med, Sch Nursing, Guangzhou, Peoples R China