[1] UNIV ALBERTA HOSP,DEPT THORAC CARDIOVASC SURG,EDMONTON T6G 1K6,ALBERTA,CANADA
[2] UNIV ALBERTA HOSP,DEPT CARDIOL,EDMONTON T6G 1K6,ALBERTA,CANADA
[3] UNIV ALBERTA HOSP,DEPT RADIOL,EDMONTON T6G 1K6,ALBERTA,CANADA
[4] UNIV ALBERTA HOSP,DEPT PEDIAT HEMATOL & ONCOL,EDMONTON T6G 1K6,ALBERTA,CANADA