Funding for this research was provided by:
Shanghai Municipal Population and Family Planning Commission (201740242)
Science and Technology Commission of Minhang District, Shanghai (2015MHZ026)
Text and Data Mining valid from 2018-12-01
Received: 30 September 2018
Accepted: 21 November 2018
First Online: 3 December 2018
Ethics approval and consent to participate
: This study had approval from the Institutional Review Board of Minhang Branch, Zhongshan Hospital, Fudan University, and written informed consent was obtained from patients.
: Not applicable.
: All authors declare that they have no competing interests.
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