RT Journal Article SR Electronic T1 Primary pulmonary hypertension in adults JF Cleveland Clinic Journal of Medicine JO Cleve Clin J Med FD Cleveland Clinic SP 275 OP 284 VO 47 IS 4 A1 Gupta, Bhagwan D. A1 Moodie, Douglas S. A1 Hodgman, James R. YR 1980 UL http://www.ccjm.org/content/47/4/275.abstract AB