| Affiliation: | 1. Department of Radiology, Segal Cancer Centre and Lady Davis Institute for Medical Research, Jewish General Hospital, McGill University, Room C-212.1, 3755 Cote Sainte-Catherine Road, Montreal, Quebec H3T 1E2, Canada;2. Departments of Radiology, Massachusetts General Hospital and Massachusetts Eye and Ear Infirmary, Harvard Medical School, 55 Fruit Street, GRB-273A, Boston, MA 02114, USA;3. Department of Radiology, Massachusetts Eye and Ear Infirmary, Harvard Medical School, 243 Charles Street, Boston, MA 02114, USA |
