Funding for this research was provided by:
Tabriz university of medical sciences (489570)
Article History
Received: 11 March 2019
Accepted: 16 May 2019
First Online: 15 July 2019
Compliance with ethical standards
:
: The ethics committee of the Tabriz University of Medical Sciences reviewed and approved the study protocol (Ethics code: TBZMED.REC.1396.324). All the study participants were informed about the aim of the study and were assured of the privacy of the records. All participants signed a consent form.
: The authors declare that there is no conflict of interest.