RT Journal Article SR Electronic T1 Gastroscopic polypectomy JF Cleveland Clinic Journal of Medicine JO Cleve Clin J Med FD Cleveland Clinic SP 153 OP 157 VO 40 IS 3 A1 Sivak, Michael V. A1 Sullivan, B. H. YR 1973 UL http://www.ccjm.org/content/40/3/153.abstract AB