1. Department of Aerospace and Mechanical Engineering The George Washington University 800 22nd St NW Washington DC 20052 USA
2. Translational Research Centre of Regenerative Medicine and 3D Printing Technologies of Guangzhou Medical University The Third Affiliated Hospital of Guangzhou Medical University No. 63 Duobao Road, Liwan District Guangzhou City Guangdong Province 510150 P. R. China
3. Department of Biomedical Engineering The George Washington University 800 22nd St NW Washington DC 20052 USA
4. Department of Electrical and Computer Engineering The George Washington University 800 22nd St NW Washington DC 20052 USA
5. Department of Medicine The George Washington University 2150 Pennsylvania Ave NW Washington DC 20052 USA