1. Laboratoire d'Organogénèse Expérimentale, Hôpital du Saint-Sacrement du CHA, and Department of Surgery, Ottawa Health Research Institute, Ottawa, ON, Canada.
2. Present address: Molecular Medicine Program and Centre for Stem Cell and Gene Therapy, Ottawa Health Research Institute, Ottawa, ON, Canada.
3. Department of Mechanical Engineering, Laval University, Québec, PQ, Canada.