RT Journal Article SR Electronic T1 COVID-19 Timeline: Centers for Medicare and Medicaid Services (CMS) Changes and Primary Care Support Were Not Enough to Prevent Practice Losses JF The Journal of the American Board of Family Medicine JO J Am Board Fam Med FD American Board of Family Medicine SP S7 OP S9 DO 10.3122/jabfm.2021.S1.200305 VO 34 IS Supplement A1 Christian Gausvik A1 Yalda Jabbarpour YR 2021 UL http://www.jabfm.org/content/34/Supplement/S7.abstract AB