Human AGR2 Deficiency Causes Mucus Barrier Dysfunction and Infantile Inflammatory Bowel DiseaseSummary mā Ahmad A. Al-Shaibi, Ussama M. Abdel-Motal, Satanay Z. Hubrack, Alex N. Bullock, Amna A. Al-Marri, Nourhen Agrebi, Abdulrahman A. Al-Subaiey, Nazira A. Ibrahim, Adrian K. Charles, Mamoun Elawad, Holm H. Uhlig, Bernice Lo, Saad R. Al-Kaabi, Muneera J. Al-Mohannadi, Fayaz A. Mir, Holm H. Uhlig, Simon P.L. Travis, Mamoun Elawad, Anthony K. Akobeng, Nazira A. Ibrahim, Fatma Al-Mudahka, Bernice Lo