RT Journal Article SR Electronic T1 A young man with unexplained dyspnea JF Cleveland Clinic Journal of Medicine JO Cleve Clin J Med FD Cleveland Clinic SP 554 OP 556 VO 73 IS 6 A1 Williams, Marc A1 Zahr, Firas A1 Mehta, Atul C. A1 Minai, Omar A. YR 2006 UL http://www.ccjm.org/content/73/6/554.abstract AB