Authors' Affiliations: 1Center for Advanced Orthopaedic Studies, 2Longwood Small Animal Imaging Facility, Beth Israel Deaconess Medical Center, Harvard Medical School, Boston, Massachusetts; 3Memorial Sloan-Kettering Cancer Center, New York, New York; 4Center for Children's Cancer Research, Huntsman Cancer Institute, the Department of Oncological Sciences, and the Division of Pediatric Hematology/Oncology, University of Utah, Salt Lake City, Utah; 5University Hospital of Münster, Münster, Germany(2012-09-30時点)