title: Letter: Renal involvement in Henoch-Schönlein purpura.
mesh_terms: D000293:Adolescent; D002648:Child; D005260:Female; D005921:Glomerulonephritis / Q000209:etiology; D006417:Hematuria / Q000209:etiology; D006801:Humans; D006967:Hypersensitivity / Q000150:complications; D007674:Kidney Diseases / Q000209:etiology*; D008297:Male; D011693:Purpura / Q000150:complications*