RT Journal Article SR Electronic T1 An 81-year-old woman with dyspnea on exertion JF Cleveland Clinic Journal of Medicine JO Cleve Clin J Med FD Cleveland Clinic SP 209 OP 212 VO 63 IS 4 A2 Longworth, David L. A1 Stoller, James K. A1 Williams, Barbara A1 Isaacson, J. Harry A1 Lauer, Michael S. YR 1996 UL http://www.ccjm.org/content/63/4/209.abstract AB