1. Institute of Child Health, University of Liverpool; c/o Cochrane Cystic Fibrosis & Genetic Disorders Review Group; Alder Hey Children's NHS Foundation Trust Eaton Road Liverpool UK L12 2AP
2. University Hospital "Santa Maria della Misericordia"; Regional Coordinator Centre for Rare Diseases; Piazzale Santa Maria della Misericordia 15 Udine Italy 33100
3. Salford Royal NHS Foundation Trust; Adult Inherited Metabolic Disorders, The Mark Holland Metabolic Unit; Stott Lane Salford UK M6 8HD
4. Academic Medical Center; Department of Internal Medicine, Division of Endocrinology & Metabolism; Postbus 22660 Amsterdam Netherlands 1100 DD
5. University of Edinburgh; Edinburgh Clinical Trials Unit; Outpatients Building, 2nd Floor Western General Hospital, Crewe Road South Edinburgh UK EH4 2XU