RT Journal Article SR Electronic T1 A new era in the treatment of primary pulmonary hypertension JF Heart JO Heart FD BMJ Publishing Group Ltd and British Cardiovascular Society SP 251 OP 252 DO 10.1136/heart.85.3.251 VO 85 IS 3 A1 BAILEY, COLLEEN L A1 CHANNICK, RICHARD N A1 RUBIN, LEWIS J YR 2001 UL http://heart.bmj.com/content/85/3/251.abstract AB