RT Journal Article SR Electronic T1 A pregnant woman with shortness of breath JF Cleveland Clinic Journal of Medicine JO Cleve Clin J Med FD Cleveland Clinic SP 19 OP 22 VO 61 IS 1 A2 David L. Longworth A1 James K. Stoller A1 Janis A. Roberts A1 Anita M. Arnold YR 1994 UL http://www.ccjm.org/content/61/1/19.abstract AB