RT Journal Article SR Electronic T1 Technical competency in flexible sigmoidoscopy. JF The Journal of the American Board of Family Practice JO J Am Board Fam Med FD American Board of Family Medicine SP 173 OP 173 VO 15 IS 2 A1 Ramakrishnan, K YR 2002 UL http://www.jabfm.org/content/15/2/173.abstract AB