1 Faculty of Economics and Business, Access to Medicine Research Center, Katholieke Universiteit Leuven, Leuven, Belgium.
2 Department of Pre-Clinical and Health Sciences, Faculty of Medical Sciences, The University of the West Indies, Cave Hill, Bridgetown, Barbados.
3 School of Nursing, Virginia Commonwealth University, Richmond, USA.
4 Department of Para-Clinical Sciences, The University of the West Indies, St. Augustine, Trinidad.
5 Department of Biostatistics and Epidemiology, Graduate School of Public Health, University of Puerto Rico at Medical Sciences Campus, San Juan, Puerto Rico, USA.
6 Department of Population Health, NYU Grossman School of Medicine, New York, USA.
7 Department of Medicine, Emory School of Medicine, Atlanta, GA, USA. [email protected].