TY  - RPRT
TI  - Ulcerative esophagitis and ulcerative colitis.
AU  - K B Knudsen
AU  - M Sparberg
PY  - 1967
DO  - 10.1001/jama.1967.03130020086028
UR  - https://pubmed.ncbi.nlm.nih.gov/6072961/
ID  - 6072961
ER  -