RT Journal Article SR Electronic T1 PULMONARY HYPERTENSION WITH SPECIAL REFERENCE TO THE VASOCONSTRICTIVE FACTOR JF British Heart Journal JO Heart FD BMJ Publishing Group Ltd and British Cardiovascular Society SP 557 OP 570 DO 10.1136/hrt.20.4.557 VO 20 IS 4 A1 Paul Wood YR 1958 UL http://heart.bmj.com/content/20/4/557.abstract AB