TY - GEN AU - Stark,M E AU - Wolfe,J T TI - Red ring sign versus aphthous ulcers of colonic mucosa? SN - 0016-5107 PY - 1996///1016 KW - Catharsis KW - Colonic Diseases KW - chemically induced KW - Colonoscopy KW - Diagnosis, Differential KW - Humans KW - Intestinal Mucosa KW - drug effects KW - Phosphates KW - adverse effects KW - Rectal Diseases KW - Ulcer N1 - Publication Type: Comment; Letter UR - https://doi.org/10.1016/s0016-5107(96)70304-8 ER -