1 Department of Epidemiology and International Public Health, School of Public Health, Bielefeld University, Bielefeld 33501, Germany. Electronic address: oliver.razum@uni-bielefeld.de.
2 Institute of Public Health, University of Porto, Portugal.
3 Department of Public Health and Health Sciences, University of Michigan-Flint, Flint, MI, USA.
4 School of Public Health, Physiotherapy and Sports Science, University College Dublin, Dublin, Ireland.
5 Department of International Health, Care and Public Health Research Institute, Faculty of Health, Medicine and Life Sciences, Maastricht University, Maastricht, Netherlands.
6 Swiss School of Public Health, Zurich, Switzerland.
7 Faculty of Public Health, Medical University Sofia, Sofia, Bulgaria.
8 Association of Schools of Public Health in Europe Secretariat, Brussels, Belgium.
9 School of Public Health (Igiene e Medicina Preventiva), University Vita-Salute San Raffaele, Milan, Italy.