Article History
Received: 5 September 2020
Accepted: 30 November 2020
First Online: 6 December 2020
Ethics approval and consent to participate
: The study protocol was approved by the institution’s review and Human Ethics Committees of the Meizhou Peoples’ Hospital (No. MPH-HEC 2016-A-40).
: Not applicable
: The authors declare that they have no competing interests.