Funding for this research was provided by:
Tabriz University of Medical Sciences
Received: 22 September 2018
Accepted: 20 May 2019
First Online: 3 June 2019
Ethics approval and consent to participate
: All the procedures performed in this study that involved human subjects were in full compliance with the ethical standards of the institutional and/or national research committee and with the 1964 Helsinki Declaration and its later amendments or comparable ethical standards. Ethical approval was obtained from the ethics committee of Tabriz University of Medical Sciences (1394.900.TBZMED.REC) to conduct the research. Written informed consent was submitted by all the participants prior to enrolment in the study. Permission was obtained from each of the health centers involved in the present study.
: Not applicable.
: The authors declare that they have no conflicts of interest.