RT Journal Article SR Electronic T1 Recurrent Obscure Gastrointestinal Bleeding JF The Journal of the American Board of Family Practice JO J Am Board Fam Med FD American Board of Family Medicine SP 169 OP 173 DO 10.3122/jabfm.6.2.169 VO 6 IS 2 A1 Peter J. Rizzolo A1 Warren P. Newton YR 1993 UL http://www.jabfm.org/content/6/2/169.abstract AB