RT Journal Article SR Electronic T1 Porphyrin Metabolism and Barbiturate Poisoning: Observations on Cases of Acute and Chronic Poisoning JF Journal of Clinical Pathology JO J Clin Pathol FD BMJ Publishing Group Ltd and Association of Clinical Pathologists SP 165 OP 167 DO 10.1136/jcp.10.2.165 VO 10 IS 2 A1 Torben K. With YR 1957 UL http://jcp.bmj.com/content/10/2/165.abstract AB