Schneider, A. et al., 2004,Gastroenterol Clin North Am. 33 (4): 789-806. Wapenaar, MC. et al., 2007, Immunogenetics. 59 (5): 349-57. Brattsand, M. et al., 2009, J Invest Dermatol. 129 (7): 1656-65. Chen, T. et al., 2009, Proteins. 77 (1): 209-19. Noah, TK. et al., 2010, Exp Cell Res. 316 (3): 452-65.