1. Department of PediatricsHospital São JoãoPorto Portugal
2. Department of Obstetrics, Gynecology and Pediatrics, Faculty of MedicineUniversity of PortoPorto Portugal
3. Department of Community Medicine, Information and Health Decision Sciences ‐ MEDCIDS, Faculty of MedicineUniversity of PortoPorto Portugal
4. Center for Health Technology and Services Research (CINTESIS), Faculty of MedicineUniversity of PortoPorto Portugal
5. EpiUnit, Institute of Public HealthUniversity of PortoPorto Portugal