Received: 21 June 2018
Accepted: 7 June 2019
First Online: 18 June 2019
Ethics approval and consent to participate
: Ethical approval was granted by Tarbiat Modares University, Faculty of Medical Sciences, Ethics Committee (Approval ID: IR.TMU.REC.1395.503) and the trial is registered in Iranian Registry of Clinical Trials (reference: IRCT20170515033981N2). All participants provided written consent for the study, were made aware that data is anonymised, securely stored, will be analysed for publication, participation is voluntary and they are free to leave the study at any time.
: Not applicable.
: The authors declare that they have no competing interests.