Article History
Received: 16 April 2019
Accepted: 28 June 2019
First Online: 18 July 2019
Compliance with ethical standards
:
: The author(s) declared no potential conflicts of interest with respect to the research, authorship, and/or publication of this article.
: This study was approved by the Mashhad University of Medical Science (MUMS).
: Patient consent was obtained prior to the initiation of the study.