TY - RPRT TI - Serial biopsy in ulcerative colitis. AU - S C TRUELOVE AU - A R HORLER AU - W C RICHARDS PY - 1955 DO - 10.1136/bmj.2.4956.1590 UR - https://pubmed.ncbi.nlm.nih.gov/13269923/ ID - 13269923 ER -