1. Biocompatibility and Tissue Regeneration Laboratories, Department of Bioengineering, Clemson University, Clemson, South Carolina, U.S.A.
2. Laboratory of Regenerative Medicine, Patewood/CU Bioengineering Translational Research Center, Greenville Hospital System, Greenville, South Carolina, U.S.A.
3. Department of Bioengineering, Clemson University, Clemson, South Carolina, U.S.A.
4. Patewood/CU Bioengineering Translational Research Center, Greenville Hospital System, Greenville, South Carolina, U.S.A.
5. Department of Anatomy, University of Medicine and Pharmacy, Tirgu Mures, Romania