1Department of Health Sciences and Health Policy, University of Lucerne and Swiss Paraplegic Research, Frohburgstrasse 3, 6002 Lucerne, Switzerland
2Unit for High Impact Events Preparedness, Department of Epidemic and Pandemic Preparedness and Prevention, Emergency Preparedness Programme, World Health Organization, Ave Appia 21, 1202 Geneva, Switzerland
3Demand for Immunization Team, Global Immunization Division, US Centers for Disease Control and Prevention, 1600 Clifton Rd NE, Atlanta, USA
4Workforce Development Team, Global Immunization Division, US Centers for Disease Control and Prevention, 1600 Clifton Rd NE, Atlanta, USA
5Demand for Immunization, Health Section, UNICEF, Plaza, NY 3 UN USA
6School of Public Health, Brown University, 121 S Main St, Providence, RI 02903 USA
7Department of Epidemic and Pandemic Preparedness and Prevention, Emergency Preparedness Programme, World Health Organization, Ave Appia 21, 1202 Geneva, Switzerland
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