Correction: BMC Public Health 19, 1312 (2019)

https://doi.org/10.1186/s12889-019-7715-z

In the original publication [1] there was an incorrect ethic approval code. The incorrect and correct code are available in this correction article, the original article has been updated.

Incorrect Ethics approval and consent to participate

While each cohort center received the ethical approval from local universities, for the purpose of this study and pooling all PERSIAN data, the ethics committee of Kermanshah University of Medical Sciences approved the study (IR.KUMS.REC.1397.187)

Correct Ethics approval and consent to participate

While each cohort center received the ethical approval from local universities, for the purpose of this study and pooling all PERSIAN data, the ethics committee of Kermanshah University of Medical Sciences approved the study (IR.KUMS.REC.1397.866)