xxiii Emmanuel Roilides Peadiatric Respiratory Unit, 3rd Paediatric Dept, Aristotle University of Thessaloniki, Hippokration Hospital, Thessaloniki, Greece. roilides@gmail.com Silvia Rosina Giovanni Rossi Pulmonary and Allergy Units, Giannina Gaslini Institute, Genova, Italy. giovannirossi@ospedale-gaslini.ge.it Robert I. Ross-Russell Department of Paediatrics, Addenbrooke’s Hospital, Cambridge, UK. robert.ross-russell@addenbrookes. nhs.uk Bruce K. Rubin Children’s Hospital of Richmond at VCU, Richmond, VA, USA. brubin@vcu.edu Franca Rusconi Epidemiology Unit, Anna Meyer, Children’s Hospital, Florence, Italy. f.rusconi@meyer.it Oliviero Sacco Pulmonary Disease Department, G. Gaslini Institute, Genoa, Italy. olivierosacco@ospedale-gaslini.ge.it Efstratios Saliakellis Great Ormond Street Hospital, London, UK. efstratios.saliakellis@gosh.nhs.uk Francesca Santamaria Department of Paediatrics, Federico II University, Naples, Italy. santamar@unina.it Bianca Schaub University Children’s Hospital Munich, Munich, Germany. Bianca.Schaub@med.uni-muenchen.de Amalia Schiavetti Department of Paediatrics, “Sapienza” University of Rome, Rome, Italy. amalia.schiavetti@uniroma1.it Andreas Schibler Paediatric Critical Care Research Group, Paediatric Intensive Care Unit, Mater Children’s Hospital, Brisbane, Australia. andreas.schibler@mater.org.au Nicolaus Schwerk Department of Pediatrics , Pediatric Pneumology, Allergology and Neonatology, Hannover Medical School, Hannover, Germany. schwerk.nicolaus@mh-hannover.de Mary Sharp Neonatology Clinical Care Unit, King Edward Memorial Hospital for Women, Perth, Australia. Mary.Sharp@health.wa.gov.au Michael Shields Department of Child Health, Queen’s University of Belfast, Belfast, UK. m.shields@qub.ac.uk