1. UMSL College of Nursing, University of Missouri, One University Boulevard, St Louis, MO 63131-4400, USA
2. Discipline of Nursing, School of Nursing and Public Health, University of KwaZulu-Natal, Mazisi Kunene Road, Glenwood, Durban, 4041, South Africa
3. School of Nursing, Faculty of Community Health Sciences, University of the Western Cape, 14 Blanckenberg Road, Belville, Capetown, South Africa