BJÖRK LARS, ERIKSON UNO, FALK JOHN, INGELMAN BJÖRN, and LINDBLAD GERT. “Improved Polymeric Contrast Agents for Roentgenologic Examination of the Gastrointestinal Tract: II. Preliminary Report on Animal Investigations”. Upsala Journal of Medical Sciences 79, no. 2 (June 1, 1974): 106-108. Accessed May 16, 2024. https://ujms.net/index.php/ujms/article/view/7408.