*Ettman CK, Cohen G, Abdalla SM, Sampson L, Trinquart L, Castrucci BC, Bork RH, Clark M, Wilson I, Vivier PM, Galea S. Persistent depressive symptoms during COVID-19: a national, population representative, longitudinal study of U.S. adults. The Lancet Regional Health - Americas. 2022; 5:100091. PMID: 34635882. PMCID: PMC8488314. https://doi.org/10.1016/j.lana.2021.100091