1 Primary Ciliary Dyskinesia Centre, University Hospital Southampton NHS Foundation Trust, Southampton, UK Academic Unit of Clinical and Experimental Sciences, Faculty of Medicine, University of Southampton, Southampton, UK jlucas1@soton.ac.ukmargaret_leigh@med.unc.edu.
2 Dept of Pediatrics, University of North Carolina School of Medicine, Chapel Hill, NC, USA Both authors contributed equally to this manuscript margaret_leigh@med.unc.edu.