Andrew Bush Department of Paediatric Respiratory Medicine, Royal Brompton Hospital, London, UK. A.Bush@rbht.nhs.uk Claudia Calogero Respiratory Medicine, Anna Meyer, University Hospital for Children, Florence, Italy. c.calogero@meyer.it Serena Calgaro Department of Pediatrics, University of Padova, Padova, Italy. serena.calgaro@studenti.unipd.it Jennifer Calvert Department of Neonatal Medicine, University Hospital of Wales, Cardiff and Vale LHB, Cardiff, UK. Giuseppina Campana Department of Pediatrics, Second University of Naples, Naples, Italy. Mario Canciani Pediatric Department, Azienda Ospedaliero, Universitaria di Udine, Udine, Italy. canciani.mario@aoud.sanita.fvg.it Carlo Capristo Department of Pediatrics, Second University of Naples, Naples, Italy. carlo.capristo@unina2.it xiv Fabio Cardinale Department of Pediatric Allergy and Pulmonology, Paediatric Hospital Giovanni XXIII, University of Bari, Bari, Italy. fabiocardinale@libero.it Kai-Håkon Carlsen Institute of Clinical Medicine, University of Oslo, Oslo, Norway. k.h.carlsen@medisin.uio.no Carolina Casini Pediatric Department, Sant’Andrea Hospital, Rome, Italy. carolinacasini@libero.it Salvatore Cazzato Dept of Pediatrics, University of Bologna, S. Orsola-Malpighi Hospital, Bologna, Italy. salvatore_cazzato@aosp.bo.it Anne B. Chang Respiratory Medicine, Royal Children’s Hospital, Brisbane, Australia. annechang@ausdoctors.net Rifat Chaudry Great Ormond Street Hospital for Children, London, UK. r.chaudry@gosh.nhs.uk Pierluigi Ciet Radiology and Pediatric Pulmonology, Erasmus Medical Center, Sophia Children’s Hospital, Rotterdam, The Netherlands. p.ciet@erasmusmc.nl