1. Université Paris-Sud, Orsay, France.
2. UMR 8200 CNRS, Villejuif, France.
3. Institut Gustave Roussy, Villejuif, France.
4. Laboratório de Fisiologia Endócrina Doris Rosenthal, Instituto de Biofísica Carlos Chagas Filho, Universidade Federal do Rio de Janeiro, Rio de Janeiro, Brazil.
5. Laboratory of Host Defenses, National Institute of Allergy and Infectious Diseases, National Institutes of Health, Rockville, Maryland.
6. UMR 8126 CNRS, Villejuif, France.
7. Department of Internal Medicine, Division of Gastroenterology, University of Michigan, Ann Arbor, Michigan.