Funding for this research was provided by:
Mashhad University of Medical Sciences (930623)
Text and Data Mining valid from 2019-11-15
Received: 13 June 2019
Accepted: 25 October 2019
First Online: 15 November 2019
Ethics approval and consent to participate
: The study was approved by the Ethics Committee of the Mashhad university of science (ethical approval code: IR.MUMS.REC.1393.964).In this respect, written informed consent has been received from all participants.
: A written informed consent form was signed by all individuals whose data is described.
: The authors declare that they have no competing interests.