Received: 3 January 2020
Accepted: 21 July 2020
First Online: 30 July 2020
Ethics approval and consent to participate
: The study protocol was approved and registered by the ethics committee of Tabriz University of Medical Sciences. The protocol of the current work has been registered in the PROSPERO system (Registration number: CRD42019143010).
: Not applicable.
: The authors declare that there is no conflict of interest.