1. Stem Cell and Gene Therapy Program, Fred Hutchinson Cancer Research Center, Seattle, WA 98109, USA.
2. Seattle Children’s Research Institute, Seattle, WA 98101, USA.
3. Bluebird Bio Inc., Cambridge, MA 02142, USA.
4. Department of Bioengineering, Rice University, Houston, TX 77251, USA.
5. Alimentary Pharmabiotic Centre Microbiome Ireland, University College Cork, Cork T12 K8AF, Ireland.
6. Department of Medicine, University of Washington, Seattle, WA 98195, USA.
7. Department of Pediatrics, University of Washington, Seattle, WA 98195, USA.
8. Department of Immunology, University of Washington, Seattle, WA 98195, USA.
9. Casebia Therapeutics, Cambridge, MA 02139, USA.