Zhang Xue-Qing, Lam Robert, Xu Xiaoyang, Chow Edward K, Kim Ho-Joong, Ho Dean
Department of Biomedical Engineering, Northwestern University Evanston, Illinois 60208, USA.
Adv Mater. 2011 Nov 2;23(41):4770-5. doi: 10.1002/adma.201102263. Epub 2011 Sep 20.