RT Journal Article SR Electronic T1 The Practicing Physician’s Approach to Headache. Fifth edition JF The Journal of the American Board of Family Practice JO J Am Board Fam Med FD American Board of Family Medicine SP 552 OP 553 DO 10.3122/jabfm.5.5.552 VO 5 IS 5 A1 Fox, Gary N. YR 1992 UL http://www.jabfm.org/content/5/5/552.abstract AB