1. Bandim Health Project, Indepth Network , Bissau , Guinea-Bissau
2. Odense Patient Data Explorative Network, Institute of Clinical Research, University of Southern Denmark , Odense , Denmark
3. Navrongo Health Research Centre , Navrongo , Ghana
4. Health Systems and Population Studies Division, International Centre for Diarrhoeal Disease Research, Bangladesh, Dhaka , Bangladesh
5. Office of Vaccines Research and Review, Center for Biologics Evaluation and Research, Food and Drug Administration , Silver Spring, Maryland , USA
6. Danish Institute of Advanced Science, Odense University Hospital, University of Southern Denmark , Odense , Denmark