RT Journal Article SR Electronic T1 Gastroscopy: Its Value and Indications JF Cleveland Clinic Journal of Medicine JO Cleve Clin J Med FD Cleveland Clinic SP 4 OP 11 VO 6 IS 1 A1 Renshaw, R. J. F. YR 1939 UL http://www.ccjm.org/content/6/1/4.abstract AB