1 Department of Community Health and Epidemiology, College of Medicine, University of Saskatchewan, Saskatoon, SK S7N 5E5, Canada. Electronic address: daa929@usask.ca.
2 Department of Environmental and Occupational Health, School of Public Health, University of Nevada, Las Vegas, NV, USA.
3 Human Sciences Research Council, Durban Regional Office, Durban, South Africa; Department of Global Health, Faculty of Health Sciences, University of Namibia, Windhoek, Namibia; Department of Public Health, Faculty of Health Sciences, Walter Sisulu University, Mthatha, South Africa.
4 Department of Paediatrics and Child Health, College of Medicine, University of Nigeria, Nsukka, Nigeria; HealthySunrise Foundation, Las Vegas, NV, USA.