Funding for this research was provided by:
National Natural Science Foundation of China (71763001)
Received: 2 June 2019
Accepted: 31 July 2019
First Online: 13 August 2019
Ethics approval and consent to participate
: In this study, questionnaires were sent out in the form of questionnaires. All respondents voluntarily agreed to participate in and complete the questionnaires. The Guangxi University medical ethics inspection committee has approved the use of verbal consent instead of written (The Medical Ethics Inspection Form of Guangxi University has been uploaded as additional file), and the institutional review board (IRB) also approved the use of verbal consent. The reasons for using verbal consent rather than written are as follows: 1) our questionnaires are anonymous, so using verbal consent rather than written is more conducive to protecting the privacy of the respondents. 2) Our study does not involve mental injury or the use of drugs and other harmful questions of participants. 3) We have clearly informed the participants in the questionnaire that the results of the survey are for academic research only, and the information they fill in will be kept confidential in accordance with the provisions of the Statistical Law of the People’s Republic of China. Only when they give verbal consent, we will send out the questionnaire to them. Therefore, the verbal consent was obtained from all participants before conducting the questionnaire.
: Not applicable.
: The authors declare that they have no competing interests.