1. Howard Hughes Medical Institute, Chevy Chase, MD, USA.
2. Department of Cell Biology, Harvard Medical School, Boston, MA, USA.
3. Department of Pediatric Oncology, Dana-Farber Cancer Institute, Boston, MA, USA.
4. Department of Biomedical Informatics, Harvard Medical School, Boston, MA, USA.
5. Department of Data Sciences, Dana-Farber Cancer Institute, Boston, MA, USA.
6. Single-Cell Sequencing Program, Dana-Farber Cancer Institute, Boston, MA, USA.
7. Wellcome Sanger Institute, Hinxton, Cambridgeshire CB10 1SA, UK.
8. Cambridge University Hospitals NHS Foundation Trust, Cambridge CB2 0QQ, UK.
9. Department of Radiation Oncology, Dana-Farber Cancer Institute, Boston, MA, USA.