Correction to: BMC Public Health (2018) 18: 448. https://bmcpublichealth.biomedcentral.com/articles/10.1186/s12889-018-5324-x. In the original version of this article [1], published on 4 April 2018, there was 1 incorrect author family name. The redundant affiliation (5) has also been removed. The original article has been updated.