Funding for this research was provided by:
iranian center of neurological research (95-03-54-34008)
Text and Data Mining valid from 2019-12-01
Received: 10 July 2019
Accepted: 4 December 2019
First Online: 14 December 2019
Ethics approval and consent to participate
: The study protocol complied with the guidelines of the 2013 version of the Helsinki Declaration and was approved both by the Institutional Review Board of the Iranian Center for Neurological Research (research number = 95–03–54-34008) and the Ethics Committee of Tehran University of Medical Sciences (ethical code number: IR.TUMS.VCR.REC.1396.2270). Written informed consent was collected from all participants.
: Not applicable.
: The authors declare no potential conflicts of interest with respect to the research, authorship, and/or publication of this article.