[1] Univ Cape Town, Dept Paediat & Child Hlth, Natl Director South African CF Registry Steering, Cyst Fibrosis Clin,Red Cross War Mem Childrens Ho, Cape Town, South Africa
[2] Moscow Reg Res & Clin Inst, All Russian Assoc Patients Cyst Fibrosis, Lab Genet Epidemiol Res Ctr Med Genet, Moscow, Russia
[3] Marmara Univ, Div Pediat Pulmonol, Istanbul, Turkey
[4] HCFMUSP, Pediat Pulmonol Unit, Sao Paulo, Brazil
[5] Ohio State Univ, Nationwide Childrens Hosp, Div Pulm & Sleep Med, Columbus, OH USA
[6] Middle East Cyst Fibrosis Assoc MECFA, Chestnut Hill, MA USA