Affiliation: | 1. Faculiy of Medicine, University of Ottawa, Ottawa, Canada Department of Diagnostic Radiology, Ottawa General Hospital, 501 Smyth Road, Ottawa, Canada, K1H 8L1;2. Faculiy of Medicine, University of Ottawa, Ottawa, Canada Department of Obstetrics and Gynecology, Ottawa General Hospital, 501 Smyth Road, Ottawa, Canada, K1H 8L6;3. Faculiy of Medicine, University of Ottawa, Ottawa, Canada Department of Neurosurgery, Children's Hospital of Eastern Ontario, 401 Smyth Road, Ottawa, Canada, K1H8L1;4. Faculiy of Medicine, University of Ottawa, Ottawa, Canada Department of Diagnostic Radiology, Children's Hospital of Eastern Ontario, 401 Smyth Road, Ottawa, Canada, K1H 8L1 |