Robert Dinwiddie Portex Unit, Institute of Child Health, London, UK. rdinwiddie@doctors.org.uk Iolo Doull Department of Paediatric Respiratory Medicine, Children’s Hospital for Wales, Cardiff, UK. doullij@cf.ac.uk Kostas Douros Respiratory Unit, 3rd Department of Paediatrics, “Attikon” Hospital, University of Athens, Athens, Greece. costasdouros@gmail.com Lex W. Doyle Department of Obstetrics and Gynaecology, The University of Melbourne, Melbourne, Australia. lwd@unimelb.edu.au Uzor Egere Vaccinology Theme, Medical Research Council (MRC) Unit, The Gambia, Africa. uegere@mrc.gm Refika Ersu Division of Pediatric Pulmonology, Marmara University, Istanbul, Turkey. rersu@yahoo.com Mark L. Everard School of Paediatrics and Child Health, University of Western Australia, Princess Margaret Hospital, Subiaco, Australia. mark.everard@uwa.edu.au xvi Brigitte Fauroux AP-HP, Hopital Armand Trousseau, Pediatric Pulmonary Department, INSERM U 955, Université Pierre et Marie Curie, Paris, France. brigitte.fauroux@trs.aphp.fr Patricia Fenton Department of Respiratory Medicine and Microbiology, Sheffield Children’s Hospital, Sheffield, UK. patricia.fenton@sch.nhs.uk Giuliana Ferrante Consiglio Nazionale delle Ricerche, Dipartimento di Scienze per la Promozione della Salute e Materno Infantile, University of Palermo, Palermo, Italy. giuliana.ferrante@unipa.it Dimitrios Filippiadis 2nd Deaprtment of Radiology, University Hospital ATTIKON, Athens, Greece. dfilippiadis@yahoo.gr Marco Filippone Department of Pediatrics, University of Padova, Padova, Italy. filippone@pediatria.unipd.it Alessandro Fiocchi Division of Allergy, Dept of Pediatrics, Pediatric Hospital Bambino Gesù, Rome, Italy. allerg@tin.it