title: Reply to Dr. Papamichael et al.'s letter.
authors.affiliation: Department of Gastroenterology, Bellvitge University Hospital, Hospitalet de Llobregat, Barcelona, Spain. Electronic address: tlobaton@bellvitgehospital.cat.
authors.forename: Triana
authors.initials: T
authors.lastname: Lobatón
authors.forename: Francisco
authors.initials: F
authors.lastname: Rodríguez-Moranta
authors.forename: Jordi
authors.initials: J
authors.lastname: Guardiola
mesh_terms: D003424:Crohn Disease / Q000378:metabolism* / Q000473:pathology*; D005243:Feces / Q000737:chemistry*; D005260:Female; D006801:Humans; D039841:Leukocyte L1 Antigen Complex / Q000032:analysis*; D008297:Male
chemical_list: D039841:Leukocyte L1 Antigen Complex