Institution: | 1.Unit of Rheumatology, Department of Internal Medicine, School of Medicine,University of Yaoundé,Yaoundé,Cameroon;2.Division of Rheumatology,University Hospitals of Geneva,Geneva 14,Switzerland;3.National Reference Laboratory for Histocompatibility, Division of Immunology and Allergy,University Hospitals of Geneva,Geneva 14,Switzerland;4.Department of Genetics and Laboratory Medicine,University Hospitals of Geneva,Geneva 14,Switzerland;5.Department of Pathology & Immunology,University of Geneva School of Medicine,Geneva 4,Switzerland |