1. Division of Paediatric Allergy, Department of Paediatrics University of Cape Town Cape Town South Africa
2. School of Public Health and Family Medicine, Faculty of Health Sciences University of Cape Town Cape Town South Africa
3. Eastern Cape Department of Health Zithulele Hospital Zithulele South Africa
4. Division of Primary Health Care, Health Sciences Faculty University of Cape Town Cape Town South Africa
5. Institute of Epidemiology and Medical Biometry Ulm University Ulm Germany
6. Center for Pediatric Research Leipzig, Hospital for Children and Adolescents University of Leipzig Medical Center Leipzig Germany
7. Department of Paediatrics Aga Khan University Hospital Nairobi Kenya
8. Department for Health Evidence, Biostatistics Research Group Radboud Institute for Health Sciences, Radboud University Medical Center Nijmegen The Netherlands
9. Division of Epidemiology and Biostatistics, School of Public Health and Family Medicine University of Cape Town Cape Town South Africa
10. Group of the Worldwide Universities Network (WUN) inVIVO Planetary Health