Received: 11 November 2019
Accepted: 14 September 2020
First Online: 29 September 2020
Ethics approval and consent to participate
: This study was approved by the Ethics Committee of Babol University of Medical Sciences, Babol, Iran (code: MUBABOL.HRI.REC.1395.58).
: Not applicable.
: The authors declare that they have no competing interests.