RT Journal Article SR Electronic T1 How Are Primary Care Systems Engaging With Social Needs? JF The Annals of Family Medicine JO Ann Fam Med FD American Academy of Family Physicians SP iii OP iii DO 10.1370/afm.2750 VO 19 IS 6 A1 Irina M. Padua A1 Michael E. Johansen YR 2021 UL http://www.annfammed.org/content/19/6/iii.abstract AB