1Kenya Medical Research Institute, Centre for Global Health Research, Box 1578, Kisumu, 40100 Kenya
2Umeå University, Department of Public Health and Clinical Medicine,Epidemiology and Global Health Unit, Umeå Centre for Global Health Research, Umeå, SE-901 85 Sweden
3New York University, College of Global Public Health, New York, 41 East 11th street, New York, NY 10003 United States
4Division of Social Science, New York University Abu Dhabi, Abu Dhabi, United Arab Emirates
5Umeå University, Department of Clinical Microbiology, Infectious Diseases, Umeå, SE-901 85 Sweden
6Institute of Public Health, University of Heidelberg, Im Neuenheimer Feld 324, 69120 Heidelberg, Germany
© The Author(s) 2018
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