1. Instituto de Higiene e Medicina Tropical, Universidade Nova de Lisboa, Lisbon, Department of Paediatrics, Hospital Beatriz Ângelo, Loures,
2. Global Health and Tropical Medicine, Instituto de Higiene e Medicina Tropical, Universidade Nova de Lisboa, Lisbon, NOVA Medical School, Universidade Nova de Lisboa, Lisbon, Department of Paediatrics, Hospital Dona Estefânia, Lisbon,
3. Global Health and Tropical Medicine, Instituto de Higiene e Medicina Tropical, Universidade Nova de Lisboa, Lisbon, Centro de Estatística e Aplicações da Universidade de Lisboa, Lisbon, z-Stat4life, Lisbon, Portugal;
4. Vaccines for Africa Initiative, School of Public Health, University of Cape Town, Cape Town, Institute of Molecular Medicine & Infectious Diseases, University of Cape Town, South Africa