xxv Guillaume Thouvenin Paediatric Pulmonary Department, Reference Centre for Rare Lung Diseases, AP-HP, Hôpital Trousseau, INSERM UMR S-938, Université Pierre et Marie Curie, Paris, France. guillaume.thouvenin@trs.aphp.fr Harm A.W.M. Tiddens Pediatric pulmonology, Erasmus Medical Center, Sophia Children’s Hospital, Rotterdam, The Netherlands. h.tiddens@erasmusmc.nl Toyin Togun Vaccinology Theme, Medical Research Council (MRC) Unit, The Gambia, Africa. ttogun@mrc.gm Daniel Trachsel Paediatric Intensive Care and Pulmonology, University-Children’s Hospital Basel, Basel, Switzerland. daniel.trachsel@ukbb.ch JohnTsanakas Peadiatric Respiratory Unit, 3rd Paediatric Dept, Aristotle University of Thessaloniki, Hippokration Hospital, Thessaloniki, Greece. tsanakasj@ath.forhnet.gr Martina Tubaro Pediatric Department, University of Trieste, Trieste, Italy. martina.tubaro@gmail.com Steve Turner Child Health, Royal Aberdeen Children’s Hospital, Aberdeen, UK. s.w.turner@abdn.ac.uk Anja A.P.H. Vaessen-Verberne Department of Paediatrics, Amphia Hospital, Breda, The Netherlands. AVaessen-Verberne@amphia.nl Horst von Bernuth Pediatric Pneumology and Immunology, Charité Berlin, Berlin, Germany. Horst.von-Bernuth@charite.de Marcel van Straten Department of Radiology, Erasmus MC, Rotterdam, The Netherlands. marcel.vanstraten@erasmusmc.nl Erika von Mutius University Children’s Hospital, Ludwig Maximilians-University, Munich, Germany. erika.von.mutius@med.uni- muenchen.de Colin Wallis Respiratory Unit, Great Ormond Street Hospital, London, UK. Colin.Wallis@gosh.nhs.uk Sophie Yammine Pediatric Pulmonology Dept, University of Bern, Bern, Switzerland. sophie.yammine@insel.ch