Funding for this research was provided by:
Received: 27 February 2019
Accepted: 23 January 2020
First Online: 17 March 2020
Ethics approval and consent to participate
: The code of ethics of this study is the number 92-147-5. We have obtained approval to conduct our study from the ethics committee of Arak University of Medical Science. This study does not have a participation section as it is not applicable.
: Not applicable because this manuscript does not contain any individual personal data.
: The authors declare that they have no competing interests.