Erratum to “Pine cone extract as natural coagulant for purification of turbid water” [Heliyon 5 (3) (March 2019) e01420]

In the original published version of this article, the publisher accidentally published a previous version of the manuscript. The final accepted version of this manuscript should have been published in place of this previous revision. The publisher apologises for the error. This correction does not, in any way, compromise the findings of the study, either in terms of the methodology, results, or interpretations drawn from the data therein. Both the HTML and PDF versions of the article have been updated to correct the error.