1. Department of International Health, CAPHRI - Care and Public Health Research Institute, Maastricht University, The Netherlands
2. Departamento de Salud Pública, Facultad de Medicina, Universidad de los Andes, Bogotá 11171, Colombia
3. Program in Public Health; Schools of Medicine and Government; Universidad de Los Andes; Bogota 11171, Colombia
4. Department of Health Policy and Management, Institute of Public Health, Faculty of Health Sciences, Jagiellonian University, Krakow 31-066, Poland