- Correspondence to Felix Ratjen, Sellers Chair of Cystic Fibrosis, Division of Respiratory Medicine, Department of Pediatrics, University of Toronto, Hospital for Sick Children, 555 University Avenue, Toronto M5G 1X8, Ontario, Canada;
- Received June 15, 2009
- Accepted October 27, 2009
- First published December 8, 2009.
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