Lu, Taoli
He, Lanying http://orcid.org/0000-0002-7127-6333
Zhang, Bei
Wang, Jian
Zhang, Lili
Dong, Wei Wei
Yang, Hao
Funding for this research was provided by:
This work was funded by the Health and Family Planning Commission of Chengdu (2015009)
Article History
Received: 31 August 2019
Accepted: 19 May 2020
First Online: 29 May 2020
Ethics approval and consent to participate
: We obtained ethical approval for this study from the Medical and Health Research Ethics Committee at Second people’s Hospital of Chengdu. The current study was carried out according to Declaration of Helsinki. Written informed consent was obtained from all study participants or their legal proxies.
: Not applicable.
: The authors declare that they have no competing interests.