Ethics’ approval and consent to participate
The Ethics Committee of Isfahan University of Medical Sciences, Isfahan, Iran, approved this study (code: IR.MUI.NUREMA.REC.1400.152n) and trial registration (IRCT20161203031200N3). Participants were informed about the study aim, freedom to voluntarily withdraw from the study without experiencing any problem, and confidentiality of their data and were asked to complete the written informed consent form of the study.