title: Co-morbidities increase the risk of serious infections in patients with rheumatoid arthritis treated with TNFalpha inhibitors.
authors.affiliation: Department of Internal Medicine and Rheumatology, University General Hospital of Larisa, Larisa 41110, Greece.
authors.forename: Evangelos M
authors.initials: EM
authors.lastname: Davas
authors.forename: Ioannis
authors.initials: I
authors.lastname: Alexiou
authors.forename: Mary
authors.initials: M
authors.lastname: Boulbou
authors.forename: Athanasios
authors.initials: A
authors.lastname: Koutroumpas
authors.forename: Konstantinos
authors.initials: K
authors.lastname: Makaritsis
authors.forename: Nikolaos
authors.initials: N
authors.lastname: Stathakis
authors.forename: Lazaros I
authors.initials: LI
authors.lastname: Sakkas