RT Journal Article SR Electronic T1 Aspects of tryptophan metabolism in health and disease: a review. JF Journal of Clinical Pathology JO J Clin Pathol FD BMJ Publishing Group Ltd and Association of Clinical Pathologists SP 17 OP 25 DO 10.1136/jcp.25.1.17 VO 25 IS 1 A1 D P Rose YR 1972 UL http://jcp.bmj.com/content/25/1/17.abstract AB