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

[This corrects the article DOI: 10.1016/j.ssmph.2018.05.002.][This corrects the article DOI: 10.1016/j.ssmph.2019.100359.][This corrects the article DOI: 10.1016/j.ssmph.2019.100488.][This corrects the article DOI: 10.1016/j.ssmph.2019.100471.][This corrects the article DOI: 10.1016/j.ssmph.2019.100363.][This corrects the article DOI: 10.1016/j.ssmph.2019.100470.][This corrects the article DOI: 10.1016/j.ssmph.2019.100501.][This corrects the article DOI: 10.1016/j.ssmph.2018.04.004.][This corrects the article DOI: 10.1016/j.ssmph.2019.100535.][This corrects the article DOI: 10.1016/j.ssmph.2019.100472.][This corrects the article DOI: 10.1016/j.ssmph.2018.03.001.][This corrects the article DOI: 10.1016/j.ssmph.2018.11.001.][This corrects the article DOI: 10.1016/j.ssmph.2019.100450.][This corrects the article DOI: 10.1016/j.ssmph.2019.100414.][This corrects the article DOI: 10.1016/j.ssmph.2019.100385.].