Received: 8 July 2020
Accepted: 9 September 2020
First Online: 17 September 2020
Ethics approval and consent to participate
: The study protocol was approved by the National Ethics Committee on Medical Research of the Ministry of Health and Medical Education on a national level. The study protocol was also reviewed and approved by the ethics committee of Zahedan University of Medical Sciences, Sanandaj University of Medical Sciences, and Shahid Sadoughi University of Medical Sciences for the regional studies in Zahedan, Sanandaj, and Yazd cities, respectively. All subjects were informed about the study goal and methods. They were enrolled after their written informed consent. A brief report on their health status and relative educational notes, laboratory results, and X-rays were sent to subjects who underwent a physical examination. All laboratory tests and X-rays were free.
: Not applicable.
: The authors declare that they have no competing interests.