1 Johns Hopkins University School of Nursing, Baltimore, MD, USA.
2 Johns Hopkins University School of Nursing, Baltimore, MD, USA; Johns Hopkins University School of Medicine, Baltimore, MD, USA; Johns Hopkins University Bloomberg School of Public Health, Baltimore, MD, USA.
3 University of Wollongong, Wollongong, NSW, Australia.
4 Consortium of Universities for Global Health, Washington, DC, VA, USA.
5 Johns Hopkins University School of Nursing, Baltimore, MD, USA; University of Wollongong, Wollongong, NSW, Australia; Johns Hopkins University Bloomberg School of Public Health, Baltimore, MD, USA. Electronic address: pdavidson@uow.edu.au.