1 Department of Biomedical Engineering, Columbia University, New York, NY, USA.
2 Department of Rehabilitation and Regenerative Medicine, Department of Pharmacology, College of Physicians and Surgeons, Columbia University, New York, NY, USA.
3 Life and Health Sciences Research Institute (ICVS), School of Medicine, University of Minho, Braga, Portugal.
4 ICVS/3B's, PT Government Associate Laboratory, Braga-Guimarães, Portugal.
5 Department of Biomedical Engineering, Columbia University, New York, NY, USA. gv2131@columbia.edu.
6 Department of Medicine, Columbia University, New York, NY, USA. gv2131@columbia.edu.