Ethical Considerations
The study was approved by the research ethics committee of
Isfahan University of Medical Sciences. All subjects and their
primary caregivers signed a written informed consent before
participating in the study. The questionnaires were anonymous,
and personal information was kept confidential. The
participants were informed of their right to leave the study
at any time. The staff of the healthcare centers was informed
about the results at the end of the study. The researchers
observed all ethical issues in accordance with the Helsinki
Declaration. This study is registered at the Iranian registry