[1] Univ Liverpool, Royal Liverpool Childrens Hosp, Inst Child Hlth, Liverpool L12 2AP, Merseyside, England
[2] Hop Robert Debre, AP HP, F-75019 Paris, France
[3] Hop Necker Enfants Malad, Paris, France
[4] AFDPHE, Paris, France
[5] St James Univ Hosp, Reg CF Unit, Leeds LS9 7TF, W Yorkshire, England
[6] St Marys Hosp, Reg Mol Genet Serv, Manchester M13 0JH, Lancs, England
[7] Azienda Osped, Cyst Fibrosis Ctr, Verona, Italy