1. Department of Women and Children's Health (Paediatric Allergy), School of Life Course Sciences, Faculty of Life Sciences and Medicine King's College London and Guy's and St Thomas' NHS Foundation Trust London UK
2. Faculty of Medicine Universidad Autónoma de Madrid (UAM) Madrid Spain
3. Department of Neonatology, Faculty of Life Sciences and Medicine King's College London and Guy's and St Thomas' NHS Foundation Trust London UK
4. Department of Obstetrics and Gynecology University Hospital La Paz Madrid Spain