RT Journal Article SR Electronic T1 A 47-year-old man with headache and ptosis JF Cleveland Clinic Journal of Medicine JO Cleve Clin J Med FD Cleveland Clinic SP 151 OP 155 VO 66 IS 3 A2 Longworth, David L. A2 Stoller, James K. A1 Nielsen, Craig A1 Mazzone, Peter YR 1999 UL http://www.ccjm.org/content/66/3/151.abstract AB