TY - RPRT TI - Ulcerative colitis in protracted remission. A quantitative scanning electron microscopic study. AU - C A Rubio AU - I May AU - P Slezak PY - 1988 DO - 10.1007/bf02554890 UR - https://pubmed.ncbi.nlm.nih.gov/3215098/ ID - 3215098 ER -