Beiler HA, Steinorth J, Witt A, Mier W, Mohammed A, Waag KL, Zachariou Z. Impaired absorption of marked oligopeptide Glycine-131I Tyrosine-Glycine after successful autologous-allotopic ileal mucosa transplantation in beagles. Journal of Pediatric Surgery. 2004 Oct;39(10):1553–7. doi: 10.1016/j.jpedsurg.2004.06.018.