RT Journal Article SR Electronic T1 Headache. Volume 1 JF The Journal of the American Board of Family Practice JO J Am Board Fam Med FD American Board of Family Medicine SP 506 OP 506 DO 10.3122/jabfm.12.6.506b VO 12 IS 6 A1 Sara Cate YR 1999 UL http://www.jabfm.org/content/12/6/506.2.abstract AB