Funding for this research was provided by:
Innovative Research Group Project of the National Natural Science Foundation of China (81320108025 and 81672109)
the Graduate Innovation Fund of Jilin University (101832018C088)
Education and Scientific Research Project of Huanghuai University (2018XJGLX0232)
Text and Data Mining valid from 2019-11-26
Received: 3 August 2019
Accepted: 14 November 2019
First Online: 26 November 2019
Ethics approval and consent to participate
: Informed consent was obtained from all participants (the consent obtained was written). The present study has been reviewed and approved by the Institutional Review Board of the School of Nursing, Jilin University (access number: 2017082301).
: Not applicable.
: The authors declare that they have no competing interests to disclose.