RT Journal Article SR Electronic T1 Endoscopic Services in the United States: By Whom, for What, and Why? JF The Journal of the American Board of Family Medicine JO J Am Board Fam Med FD American Board of Family Medicine SP 454 OP 456 DO 10.3122/jabfm.2019.04.190192 VO 32 IS 4 A1 James W. Feimster A1 John D. Mellinger YR 2019 UL http://www.jabfm.org/content/32/4/454.abstract AB