1. From the Departments of Pathology and Pediatrics, Children’s and Women’s Hospital of British Columbia, Vancouver, British Columbia, Canada; Intergroup Rhabdomyosarcoma Study Group Statistical Center, Office of the Chancellor, and Department of Microbiology/Pathology, University of Nebraska Medical Center, Omaha, NE; Department of Laboratory Medicine, Columbus Children’s Hospital, Columbus, OH; Department of Pathology and Laboratory Medicine, Childrens Hospital Los Angeles, Los Angeles, CA; Office of the...