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Lupus Erythematosus, Systemic
Rheumatoid Arthritis
Lupus Nephritis
Fibromyalgia
African Americans
Hispanic Americans
European Continental Ancestry Group
United States
Texas
Cohort Studies
Longitudinal Studies
Severity of Illness Index
Risk Factors
Ethnic Groups
Socioeconomic Factors
Multivariate Analysis
Disease Progression
Genetic Predisposition to Disease
Methotrexate
Antirheumatic Agents
Co-Publications
90
68
58
40
37
26
23
21
20
17
15
14
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