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Authors
Ren, Zhengjia
Zhou, Yuchu
Liu, Yanhong
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Article History
Received: 25 April 2020
Accepted: 18 October 2020
First Online: 27 October 2020
Ethics approval and consent to participate
: Ethics approval for the study was given by the institutional review committee of Hebei University of Chinese Medicine. Written informed consent was obtained from all individual participants included in the study. The confidentiality and privacy of the interviewees were maintained.
: Not Applicable.
: The authors declare that there is no conflict of interests.
