Funding for this research was provided by:
Iran University of Medical Sciences (IUMS/SHMIS-1395/9221532208)
Text and Data Mining valid from 2020-01-06
Received: 11 December 2018
Accepted: 16 October 2019
First Online: 6 January 2020
Ethics approval and consent to participate
: Consent to participate is not applicable for this systematic review study. This study was approved by the Ethics Committee of the Research department of Iran University of Medical Sciences.
: Not applicable.
: The authors declare that they have no competing interests.