Approval of ethics and consent for the company
The study complies with the World Medical Association Helsinki Declaration regarding the ethical conduct of research involving human subjects and the study protocol was approved by the Ethics Committee of Tabriz University of Medical Sciences with the code of IR.TBZMED.REC.1400.416). Informed written consent was obtained from each participant. The principles of anonymity and confidentiality were applied and the results of the request were presented to the participants.