1. Division of Allergy and Clinical Immunology, Department of Medicine, University of Colorado School of Medicine, Denver, Colorado.
2. R.M.T. and R.J.H. contributed equally to this work.
3. Division of Pediatric Surgery, Children's Hospital, Denver, Colorado.
4. Division of Molecular Bioregulation, Cancer Research Institute, Kanazawa University, Kanazawa, Ishikawa, Japan.
5. Integrated Department of Immunology, Department of Medicine, University of Colorado School of Medicine, Denver, Colorado.
6. Section of Pediatric Gastroenterology, Hepatology, and Nutrition, Department of Pediatrics, University of Colorado School of Medicine and Children's Hospital, Denver, Colorado.