OBJECTIVE : Childhood-onset systemic lupus erythematosus ( SLE ) presents a unique subgroup of patients for genetic study .
O O O B-DiseaseOrPhenotypicFeature I-DiseaseOrPhenotypicFeature I-DiseaseOrPhenotypicFeature O B-DiseaseOrPhenotypicFeature O O O O O O B-OrganismTaxon O O O O