title: Reply.
authors.affiliation: Department of Internal Medicine III, University Hospital RWTH, Aachen, Germany and Department of Immunology, Complutense University School of Medicine, Madrid, Spain.
authors.forename: Francisco Javier
authors.initials: FJ
authors.lastname: Cubero
authors.affiliation: Department of Internal Medicine III, University Hospital, RWTH, Aachen, Germany.
authors.forename: Miguel Eugenio
authors.initials: ME
authors.lastname: Zoubek
authors.affiliation: Department of Internal Medicine III, University Hospital, RWTH, Aachen, Germany.
authors.forename: Christian
authors.initials: C
authors.lastname: Trautwein