Liao, Xuan http://orcid.org/0000-0003-0097-684X
Peng, Yue http://orcid.org/0000-0002-5752-0715
Liu, Bo http://orcid.org/0000-0001-9128-2258
Tan, Qing-Qing http://orcid.org/0000-0002-3858-0528
Lan, Chang-Jun http://orcid.org/0000-0002-1040-9622
Funding for this research was provided by:
Health and Family Planning Commission of Sichuan Province (18ZD022, 18ZD022, 18ZD022, 18ZD022, 18ZD022)
Article History
Received: 9 October 2019
Accepted: 30 January 2020
First Online: 21 February 2020
Competing interests
: The authors declare no competing interests.