1 Division of Cardiovascular Sciences, NHLBI, Bethesda, Maryland, USA.
2 Division of Blood Diseases and Resources, NHLBI, Bethesda, Maryland, USA.
3 Department of Chemical Engineering, Institute for Medical Engineering and Science, Harvard-MIT Division of Health Sciences & Technology; David H. Koch Institute for Integrative Cancer Research, Massachusetts Institute of Technology, Cambridge, Massachusetts, USA.
4 Department of Bioengineering, Rice University, Houston, Texas, USA.
5 Bluebird Bio, Somerville, Massachusetts, USA.
6 Department of Microbiology, Immunology & Molecular Genetics, University of California, Los Angeles, Los Angeles, California, USA.
7 Division of Experimental Hematology and Cancer Biology, Cincinnati Children's Hospital Medical Center, University of Cincinnati College of Medicine, Cincinnati, Ohio, USA.
8 Department of Bioengineering, University of Pennsylvania, Philadelphia, Pennsylvania, USA.
9 Department of Cardiology, Boston Children's Hospital, Boston, Massachusetts, USA.
10 Center for Immunity and Immunotherapies, Seattle Children's Research Institute; and Departments of Pediatrics and Immunology, University of Washington, Seattle, Washington, USA.
11 Boston Children's Hospital and Dana Farber Cancer Institute, Department of Pediatrics, Harvard Medical School, Boston, Massachusetts, USA.
12 Workshop Chair, Horae Gene Therapy Center, Department of Pediatrics, University of Massachusetts, Boston, Massachusetts, USA.