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 Michael Mazzone A1 Stoney Abercrombie A1 Joseph Gravel, Jr. A1 Karen Hall A1 Grant Hoekzema A1 Stanley Kozakowski A1 Benjamin Schneider A1 Todd Shaffer A1 Martin Wieschhaus YR 2011 UL http://www.annfammed.org/content/9/5/467.abstract AB