Received: 16 March 2020
Accepted: 20 October 2020
First Online: 31 October 2020
Change Date: 19 January 2021
Change Type: Correction
Change Details: An amendment to this paper has been published and can be accessed via the original article.
Ethics approval and consent to participate
: The sample patients’ information in this research is secondary data, which we extract from the Health and Family Planning Commission in Shanxi province, China. This research was reviewed and approved by the Ethics Committee of Tongji Medical College, Huazhong University of Science and Technology (IORG No.: IORG0003571).
: Not applicable.
: No competing financial interests exist.