[1] Dalhousie Univ, Dept Med, Halifax, NS B3H 2Y9, Canada
[2] Queen Elizabeth II Hlth Sci Ctr, Dept Radiat Oncol, Halifax, NS B3H 2Y9, Canada
[3] Queen Elizabeth II Hlth Sci Ctr, Dept Pathol, Halifax, NS B3H 2Y9, Canada
[4] Queen Elizabeth II Hlth Sci Ctr, Dept Diagnost Imaging, Halifax, NS B3H 2Y9, Canada
[5] Queen Elizabeth II Hlth Sci Ctr, Dept Surg, Halifax, NS B3H 2Y9, Canada
[6] Queen Elizabeth II Hlth Sci Ctr, Dept Med, Halifax, NS B3H 2Y9, Canada
[7] Cape Breton Canc Ctr, Dept Radiat Oncol, Sydney, NS, Canada
[8] Cape Breton Canc Ctr, Dept Med Oncol & Hematol, Sydney, NS, Canada