TY - RPRT TI - Predicting polyposis severity by proctoscopy: how reliable is it? AU - J Church AU - C Burke AU - E McGannon AU - O Pastean AU - B Clark PY - 2001 DO - 10.1007/bf02234779 UR - https://pubmed.ncbi.nlm.nih.gov/11584194/ ID - 11584194 ER -