Text and Data Mining valid from 2019-12-01
Received: 20 September 2019
Accepted: 12 December 2019
First Online: 20 December 2019
Ethics approval and consent to participate
: The current study was approved by the Ethics Committee of Hamadan University of Medical Sciences, Hamadan, Iran (ethics no. IR.UMSHA.REC.1398.699).
: Not applicable.
: The authors declare that they have no competing interests.