1. Institute of Ethnography SASA, Belgrade, Serbia
2. World Health Organization Regional Office for Europe, Copenhagen, OE, Denmark
3. Institute of Epidemiology, Visegradska 26a, Faculty of Medicine, University of Belgrade, Belgrade, Serbia
4. Institute of Public Health of Serbia “Dr Milan Jovanović Batut”, Belgrade, Serbia
5. Valid Research Limited, Wetherby, West Yorkshire, UK