Characterizing the use of virtual care in primary care settings during the COVID-19 pandemic: a retrospective cohort study. - Singer, Alexander; Kosowan, Leanne; LaBine, Lisa; Shenoda, Daniel; Katz, Alan; Abrams, Elissa M; Halas, Gayle; Wong, Sabrina T.; Talpade, Siddhesh; Kirby, Sarah; Baldwin, Alanna; Francois, Jose (BMC Primary Care, 2022)