1 Charité-Universitätsmedizin Berlin, Corporate Member of Freie Universität Berlin and Humboldt-Universität zu Berlin, Institute of Health and Nursing Science, Berlin, Germany.
2 Unit for Health Promotion Research, University of Southern Denmark, Esbjerg, Denmark.
3 NOVA National School of Public Health, Public Health Research Centre, Universidade NOVA de Lisboa and Comprehensive Health Research Center (CHRC), Lisbon, Portugal.
4 Social Marketing @ Griffith, Griffith Business School, Griffith University, Southport, QLD, Australia.
5 Institute of Social and Preventive Medicine, University of Bern, Bern, Switzerland.
6 Faculty of Public Health and Primary Care, International Centre for Reproductive Health, Ghent University, Ghent, Belgium.