TY - RPRT TI - Anatomic variants and artifacts in ERCP interpretation. AU - D J Gulliver AU - P B Cotton AU - J Baillie PY - 1991 DO - 10.2214/ajr.156.5.2017963 UR - https://pubmed.ncbi.nlm.nih.gov/2017963/ ID - 2017963 ER -