RT Journal Article SR Electronic T1 Effective Medical Imaging: A Signs and Symptoms Approach JF The Journal of the American Board of Family Practice JO J Am Board Fam Med FD American Board of Family Medicine SP 281 OP 282 DO 10.3122/jabfm.7.3.281b VO 7 IS 3 A1 Heidrich, Fred YR 1994 UL http://www.jabfm.org/content/7/3/281.2.abstract AB