1. Rongxiang Xu Center for Regenerative Therapeutics, Beth Israel Deaconess Medical Center, Harvard Medical School, Boston, Massachusetts, USA.
2. SomaGenics, Inc., Santa Cruz, California, USA.
3. Harvard-MIT Division of Health Sciences and Technology, Department of Chemical Engineering, Institute for Soldier Nanotechnologies, and Koch Institute for Integrative Cancer Research, Massachusetts Institute of Technology, Cambridge, Massachusetts, USA.