Cystic Fibrosis or CF is a genetic disorder that affects the lungs and digestive system. It's the most common, fatal genetic disease affecting Canadian children. The Director of the Cystic Fibrosis Clinic at the Hospital for Sick Children (Sick Kids Hospital) and the Medical Director of the Pediatric Lung Transplant Program, Dr. Melinda Solomon, on living with Cystic Fibrosis.