Received: 10 May 2020
Accepted: 18 December 2020
First Online: 7 January 2021
Ethics approval and consent to participate
: The data was obtained from the MOH without any personal ID for this secondary analysis. The study protocol was approved by the institutional review boards (IRB) at the ethics committee of Kerman University of Medical Sciences (IR.KMU.REC.1397.011). It has to be mentioned that the data of registries in Iran has been collected from subjects based on the national ethical codes. Therefore, according to the above-mentioned IRB protocol and based on the national regulations, there is no need for consent. In this study, administrative permissions to access the raw data had been obtained from the National MS committee in MOH.
: Not applicable.
: There are no conflicts of interest.