Ma, Hui
Liu, Shaoyu
Xiong, Ying
Zhang, Zhanwen
Sun, Aixia
Su, Shu
Liang, Hong
Yuan, Gongjun
Tang, Ganghua http://orcid.org/0000-0003-2639-0388
Funding for this research was provided by:
the Natural Science Foundation of Guangdong Province (No. 2015A030313067)
the National Natural Science Foundation of China (No. 81571704, No. 81671719, No. 81770505)
the Science and Technology Foundation of Guangdong Province (No. 2014A020210008, No. 2016B090920087)
the Science and Technology Planning Project Foundation of Guangzhou (No. 201604020169, No. 201510010145)
the Research Project of Shanghai Municipal Health and Family Planning Commission (No. 201740060)
Article History
First Online: 23 June 2018
Compliance with ethical standards
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: The authors declare that they have no conflict of interest.