RT Journal Article SR Electronic T1 Allergy: Theory and Practice. Second edition JF The Journal of the American Board of Family Practice JO J Am Board Fam Med FD American Board of Family Medicine SP 438 OP 438 DO 10.3122/jabfm.6.4.438 VO 6 IS 4 A1 Tillman Farley YR 1993 UL http://www.jabfm.org/content/6/4/438.1.abstract AB