RT Journal Article SR Electronic T1 Internal medicine update JF Cleveland Clinic Journal of Medicine JO Cleve Clin J Med FD Cleveland Clinic SP 453 OP 453 VO 59 IS 5 A2 Longworth, David L. A2 Stoller, James K. A1 Tomford, J. Walton YR 1992 UL http://www.ccjm.org/content/59/5/453.1.abstract AB