TY  - RPRT
TI  - The double contrast method in ulcerative colitis.
AU  - S WELIN
AU  - F BRAHME
PY  - 1961
DO  - 10.3109/00016926109175119
UR  - https://pubmed.ncbi.nlm.nih.gov/13784201/
ID  - 13784201
ER  -