TY - RPRT TI - Colonoscopy: why are general surgeons being excluded? AU - A Mehran AU - P Jaffe AU - J Efron AU - A Vernava AU - M A Liberman PY - 2003 DO - 10.1007/s00464-003-8806-5 UR - https://pubmed.ncbi.nlm.nih.gov/14569450/ ID - 14569450 ER -