Erratum regarding missing Declaration of Competing Interest statements in previously published articles

Abstract

[This corrects the article DOI: 10.1016/j.ijcha.2019.100440.][This corrects the article DOI: 10.1016/j.ijcha.2019.100448.][This corrects the article DOI: 10.1016/j.ijcha.2019.100380.][This corrects the article DOI: 10.1016/j.ijcha.2020.100549.][This corrects the article DOI: 10.1016/j.ijcha.2019.100372.][This corrects the article DOI: 10.1016/j.ijcha.2020.100468.].