RT Journal Article SR Electronic T1 THE DELTA-EXCHANGE JF The Annals of Family Medicine JO Ann Fam Med FD American Academy of Family Physicians SP 467 OP 468 DO 10.1370/afm.1306 VO 9 IS 5 A1 Mazzone, Michael A1 Abercrombie, Stoney A1 Gravel, Joseph A1 Hall, Karen A1 Hoekzema, Grant A1 Kozakowski, Stanley A1 Schneider, Benjamin A1 Shaffer, Todd A1 Wieschhaus, Martin YR 2011 UL http://www.annfammed.org/content/9/5/467.abstract AB