TY  - RPRT
TI  - Ringlike rectal ulcers after biopsy or polypectomy.
AU  - A S Lev-Toaff
AU  - M S Levine
AU  - I Laufer
AU  - H Herlinger
PY  - 1987
DO  - 10.2214/ajr.148.2.285
UR  - https://pubmed.ncbi.nlm.nih.gov/3492105/
ID  - 3492105
ER  -