[1] Natl Univ Singapore, Alice Lee Ctr Nursing Studies, Yong Loo Lin Sch Med, Singapore, Singapore
[2] Natl Univ Hlth Syst, Singapore, Singapore
[3] Tan Tock Seng Hosp, Dept Nursing, Natl Healthcare Grp, Singapore, Singapore
[4] Univ Oulu, Res Unit Hlth Sci & Technol, Oulu, Finland
[5] Univ Oulu, Oulu Univ Hosp, Med Res Ctr Oulu, Oulu, Finland
[6] Univ Oulu, Oulu, Finland
[7] Finnish Ctr Evidence Based Hlth Care, JBI Ctr Excellence, Helsinki, Finland