RT Journal Article SR Electronic T1 Hypoxia and the pulmonary circulation. JF Journal of Clinical Pathology JO J Clin Pathol FD BMJ Publishing Group Ltd and Association of Clinical Pathologists SP 21 OP 29 DO 10.1136/jcp.s3-11.1.21 VO s3-11 IS 1 A1 Heath, D YR 1977 UL http://jcp.bmj.com/content/s3-11/1/21.abstract AB