Funding for this research was provided by:
National Natural Science Foundation of China (71974061)
Health and Family Planning Commission of Hubei Province (WJ2019M144)
Received: 28 May 2020
Accepted: 15 October 2020
First Online: 27 October 2020
Ethics approval and consent to participate
: Ethical approval was obtained from the Ethics Committee of Tongji Hospital of Tongji Medical College of Huazhong University of Science and Technology. Written consent was received from all participants before taking part in the study.
: The participants gave consent for direct quotes from their interviews to be published in this manuscript.
: The authors declare that they have no competing interests.