Dr. Felix Ratjen is the Co-Director of the CF Centre at SickKids, and is Medical Director of the Clinical Research Unit. He completed a majority of his medical education in Germany, along with a research fellowship at the Children’s Hospital in Boston. He was subsequently Deputy Chief of the Department of Paediatrics at the University of Essen, and was the chief executive of the scientific board of the German CF Foundation until coming to Canada in 2005. His CF research involves multiple clinical trials, including new therapeutic strategies to target the underlying defects, as well as in the treatment of airway infections within the CF Centre at SickKids, in collaboration with the adult centre at St. Michael’s Hospital, and internationally. Ratjen holds the H.E. Seller’s Chair in Cystic Fibrosis at SickKids. In addition, he is the Division Chief in Respiratory Medicine at SickKids, as well as Senior Scientist, Translational Medicine at the SickKids Research Institute, and a Professor of Paediatrics at the University of Toronto.