. Author manuscript; available in PMC: 2015 Jan 1.
Published in final edited form as: Acta Biomater. 2013 Oct 1;10(1):10.1016/j.actbio.2013.09.031. doi: 10.1016/j.actbio.2013.09.031
© 2013 Acta Materialia Inc. Published by Elsevier Ltd. All rights reserved.