title: A study of lupus nephritis.
mesh_terms: D000293:Adolescent; D000328:Adult; D002648:Child; D005260:Female; D006801:Humans; D008180:Lupus Erythematosus, Systemic / Q000150:complications*; D008297:Male; D008875:Middle Aged; D009393:Nephritis / Q000175:diagnosis / Q000209:etiology*