Ethics approval and consent to participate
For this study, the necessary approvals were obtained from the Ethics Committee of Shiraz University of Medical Sciences (ethics code: IR.SUMS.REC.1399.1034) and the officials of the health centers. All methods were carried out in accordance with Declaration of Helsinki and relevant guidelines and regulations. The objectives and process of the research were explained to the participants who were assured of the confidentiality of the information. All participants signed a written informed consent form.