We examined shift-level teams using in-person shift-level surveys. The first paper is quantitative https://pubmed.ncbi.nlm.nih.gov/38625976/ OR https://journals.plos.org/plosone/article?id=10.1371/journal.pone.0298586 and the second paper uses mixed methods to examine how ICU teams provide backup to one another: https://pubmed.ncbi.nlm.nih.gov/39893857/ OR https://www.heartandlung.org/article/S0147-9563(25)00014-7/abstract