Funding for this research was provided by:
Tehran University of Medical Sciences and Health Services
Text and Data Mining valid from 2019-09-18
Received: 27 November 2018
Accepted: 9 September 2019
First Online: 18 September 2019
Ethics approval and consent to participate
: The study protocol was in accordance with ethic guidelines of Tehran University of Medical Sciences (TUMS) and the study was approved by the review board at TUMS, Tehran, Iran.
: Not applicable.
: The authors declare that they have no competing interests.