1Seattle Children’s Hospital, Seattle, WA, USA
2Memorial Sloan-Kettering Cancer Center, New York, NY, USA
3The University of Texas MD Anderson Cancer Center, Houston, TX, USA
4Bayer AG Pharmaceuticals, Berlin, Germany
5Seattle Children's Hospital, Seattle, WA, USA
6University of Washington, Seattle, WA, USA
7Bayer HealthCare Pharmaceuticals Inc., Whippany, NJ, USA
8Chrestos Concept GmbH & Co. KG, Essen, Germany
9Bayer HealthCare Pharmaceuticals, Inc., Basel, Switzerland
10Memorial Sloan Kettering Cancer Center, New York, NY, USA
11Weill Cornell Medical College, New York, NY, USA
12The Children's Hospital of Philadelphia, University of Pennsylvania, Philadelphia, PA, USA