[1] ST Shaikh Tahnoon Med City Hosp, Dept Adult Pulm Med, Al Ain, Abudhabi, U Arab Emirates
[2] Hacettepe Univ, Fac Med, Ihsan Dogramaci Childrens Hosp, Dept Pediat Pulmonol, Ankara, Turkiye
[3] AOUI Verona, Cyst Fibrosis Ctr, Cardiothoracovasc Dept, Verona, Italy
[4] Univ Hosp Ctr Zagreb, Cyst Fibrosis Ctr Peadiatr & Adult Zagreb, Zagreb, Croatia
[5] Polanki Childrens Hosp, Dept Pediat & Cyst Fibrosis, Gdansk, Poland
[6] Inst Fernandes Figueira FIOCRUZ, Pediat Cyst Fibrosis Ctr, Dept Pediat Pulmonol, Rio De Janeiro, RJ, Brazil