PTPN22, CTLA4, FcγRIIa, FcγRIIIa and FcγRIIIb polymorphisms in Tunisian patients with systemic lupus erythematosus Journal title: International Journal of Clinical Rheumatology Authors: Tarak Dhaouadi, Imen Sfar, Lamia Ben Hassine, Sami Turki, Narjess Khalfallah, Taïeb Ben Abdallah, Yo... Subject(s): Rheumatology