Li, Y.
Li, C. F.
Zhang, J.
Xia, X. F.
Zhou, L. Y.
Liu, J. J.
Song, Z. Q.
Lv, Y. M.
Wang, A. Y.
Zhang, Y. P.
Liang, C. F.
Shi, Y. Y.
Quigley, E. M.
Huang, Y. H.
Ding, S. G.
Funding for this research was provided by:
foundation of Chinese Medical Association, Medical Education Branch (No. 2012-JS-59)