title: STUDIES OF COPROPORPHYRIN. II. AN INVESTIGATION OF THE CONTRIBUTION TO THE URINARY COPROPORPHYRIN OF HEMOGLOBIN AND OF BACTERIAL METABOLISM IN THE INTESTINAL TRACT.
authors.affiliation: Department of Medicine, University of Minnesota Hospital, Minneapolis.
authors.forename: E A
authors.initials: EA
authors.lastname: Larson
authors.forename: C J
authors.initials: CJ
authors.lastname: Watson