. Author manuscript; available in PMC: 2015 Jan 1.
Published in final edited form as: Acta Biomater. 2013 Sep 12;10(1):10.1016/j.actbio.2013.09.004. doi: 10.1016/j.actbio.2013.09.004
© 2013 Acta Materialia Inc. Published by Elsevier Ltd. All rights reserved.