Funding for this research was provided by:
Young Scientists Fund (81801323)
Tianjin Science and Technology Committee (18ZXRHSY00100)
Program of Psychological Health Education of Tianjin City (XLZX-G201719)
Received: 15 November 2019
Accepted: 27 January 2020
First Online: 3 February 2020
Ethics approval and consent to participate
: Written or electronic informed consent was obtained for all participants. The study was overseen and approved by the Ethical Committee of Tianjin Anding Hospital.
: Not applicable.
: The authors declare that they have no competing interests.