1Practice for Pediatric Allergy and Pneumology, Berlin, Germany
2Department of Pediatric Pulmonology, Immunology and Intensive Care Medicine, Charité - University Medicine Berlin, Augustenburger Platz, 1, 13353 Berlin, Germany
3Practice for General Pediatrics and Pediatric Cardiology, Berlin, Germany
4Practice for General Pediatrics and Pediatric Allergy, Berlin, Germany
5Pediatric Department and Pediatric Allergology Unit, Sandro Pertini Hospital, Rome, Italy
© The Author(s). 2018
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