Massimo Pifferi Department of Pediatrics, University of Pisa, Pisa, Italy. m.pifferi@med.unipi.it Mariëlle Pijnenburg Department of Paediatrics/Paediatric Respiratory Medicine, Rotterdam The Netherlands. m.pijnenburg@erasmusmc.nl Petr Pohunek Paediatric Pulmonology, University Hospital Motol, Prague, Czech Republic. petr.pohunek@LFMotol.cuni.cz Kostas N. Priftis Respiratory Unit, 3rd Department of Paediatrics, “Attikon” Hospital, University of Athens, Athens, Greece. kpriftis@otenet.gr Diana Rädler Pulmonary Dept, University Children´s Hospital, Munich, Germany. diana.raedler@med.uni-muenchen.de Adriana Ramirez ADEP ASSISTANCE, Suresnes, France. a.ramirez@adepassistance.fr Felix Ratjen Hospital for Sick Children, Toronto, Canada. felix.ratjen@sickkids.ca xxii Nicolas Regamey Division of Respiratory Medicine, Department of Paediatrics, Inselspital and University of Bern, Bern, Switzerland Nicolas.Regamey@insel.ch Elena Ribera Pulmonary Disease Department, G. Galini Institute, Genoa, Italy. Josef Riedler Children’s Hospital Schwarzach, Salzburg, Austria. josef.riedler@kh-schwarzach.at Francesca Rizzo Pulmonary Disease Department, G. Galini Institute, Genoa, Italy. Paul Robinson Dept of Respiratory Medicine, Children’s Hospital at Westmead, Westmead, Australia. paul.robinson1@health.nsw.gov.au Charles C. Roehr Dept of Neonatology, Charité Berlin, Berlin, Germany. christoph.roehr@charite.de Malin Rohdin Neonatal Research Unit, Department of Woman and Child Health, Karolinska Institutet, Astrid Lindgren Children’s Hospital, Karolinska University Hospital, Stockholm, Sweden. malin.rohdin@ki.se