Funding for this research was provided by:
Natural Science Foundation of Guangdong Province (2016A030313381)
Shenzhen Science and Technology programs (JCYJ2050529151839281)
Shenzhen Health and Family Planning Commission (SZSM201612041)
Text and Data Mining valid from 2020-01-09
First Online: 9 January 2020
Change Date: 17 February 2020
Change Type: Correction
Change Details: In the original publication of the article, the name of the fourth author, which previously read "Howard Chan”, should read as "Howard Chang". The original article has been updated.
Compliance with Ethical Standards
: Dake Chen, Tao Xu, Shubin Wang, Howard Chang, Tao Yu, Yu Zhu, and Jian Chen have no conflicts of interest that are directly relevant to the content of this review/study.