RT Journal Article SR Electronic T1 Treating Headache and Concomitant Disease JF Cleveland Clinic Journal of Medicine JO Cleve Clin J Med FD Cleveland Clinic SP 229 OP 230 VO 56 IS 3 A1 Solomon, Glen D. YR 1989 UL http://www.ccjm.org/content/56/3/229.2.abstract AB