OP0255 Rheumatoid Arthritis Comorbidity Index: Development and Validation of A New Specific Tool for Classifying Prognostic Comorbidity in Rheumatoid Arthritis Patients
OP0255 Rheumatoid Arthritis Comorbidity Index: Development and Validation of A New Specific Tool for Classifying Prognostic Comorbidity in Rheumatoid Arthritis Patients