Received: 27 June 2019
Accepted: 26 May 2020
First Online: 8 June 2020
Ethics approval and consent to participate
: The research was approved by the Ethics Committee of the China Pharmaceutical University (Project number: CPU2015006). Written consent was obtained from all participants, prior to the survey. No sensitive and personal data were recorded, while confidentiality of data was assured during data analysis and reporting. Data were saved in password protected electronic files, accessible by select members of the research team.
: Not Applicable.
: The authors declare that they have no competing interests.