Funding for this research was provided by:
Tehran University of Medical Sciences and Health Services (92-04-51-24890)
Received: 8 July 2019
Accepted: 14 October 2020
First Online: 11 November 2020
Ethics approval and consent to participate
: The Ethics Committee of TUMS (reference number 24890, 11/08/2014) approved this project and the method of informed consent (verbal) for recruitment of participants in the study and it was registered in ICTs (IRCT2014092918120N1). All data and records were stored confidentially. Consent to participate was received (tape-recorded) through standard forms.
: Not applicable.
: The authors declare that they have no competing interests.