1 Centre for Global Health Research, Unity Health Toronto, University of Toronto, Toronto, ON M581C8, Canada; Dalla Lana School of Public Health, University of Toronto, Toronto, ON M581C8, Canada. Electronic address: prabhat.jha@utoronto.ca.
2 Centre for Global Health Research, Unity Health Toronto, University of Toronto, Toronto, ON M581C8, Canada; Department of Statistical Sciences, University of Toronto, Toronto, ON M581C8, Canada.
3 Community Health Sciences, Njala University, Bo, Sierra Leone.