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

Abstract

[This corrects the article DOI: 10.1016/j.ijnss.2020.06.010.][This corrects the article DOI: 10.1016/j.ijnss.2018.01.001.][This corrects the article DOI: 10.1016/j.ijnss.2017.12.008.][This corrects the article DOI: 10.1016/j.ijnss.2020.04.002.][This corrects the article DOI: 10.1016/j.ijnss.2018.03.006.][This corrects the article DOI: 10.1016/j.ijnss.2018.03.005.][This corrects the article DOI: 10.1016/j.ijnss.2018.04.008.][This corrects the article DOI: 10.1016/j.ijnss.2018.06.005.][This corrects the article DOI: 10.1016/j.ijnss.2017.12.007.][This corrects the article DOI: 10.1016/j.ijnss.2018.07.005.][This corrects the article DOI: 10.1016/j.ijnss.2019.06.004.][This corrects the article DOI: 10.1016/j.ijnss.2020.06.009.][This corrects the article DOI: 10.1016/j.ijnss.2018.04.002.][This corrects the article DOI: 10.1016/j.ijnss.2018.04.012.].