Li, Y.
Zhou, J.
Wu, Y.
Lu, T.
Yuan, M.
Cui, Y.
Zhou, Y.
Yang, G.
Hong, Y.
Funding for this research was provided by:
a research grant from the Shanghai Fifth Hospital of Fudan University (2014WYYJ10)
Grants from Zhejiang Province Natural Science Foundation (Y 14C200042)
Scientific research project of Shanghai municipal health and Family Planning Commission (201540203)