[1] VU University Medical Center,Department of Midwifery Science, AVAG and the EMGO + Institute for Health and Care Research
[2] Imperial College London,Department of Infectious Disease Epidemiology, Imperial College School of Public Health
[3] Norfolk Place,Department of Medical Microbiology and Infectious Diseases
[4] Erasmus Medical Centre,Department of Paediatrics
[5] Erasmus Medical Centre,Laboratory of Immunogenetics, Department of Medical Microbiology and Infection Control
[6] VU University medical center,Institute for Public Health Genomics, Department of Genetics and cell Biology, Research School GROW
[7] Maastricht University,Department of General Practice and Elderly Care Medicine/EMGO+, Institute for Health and Care Research
[8] Netherlands Institute for Health Services Research (NIVEL),Faculty of Health Sciences
[9] VU University Medical Center,undefined
[10] McMaster University,undefined