RT Journal Article SR Electronic T1 Epidemiology of Henoch-Schönlein purpura JF Cleveland Clinic Journal of Medicine JO Cleve Clin J Med FD Cleveland Clinic SP SII-87 OP SII-87 VO 69 IS 4 suppl 2 A1 Frank T. Saulsbury YR 2002 UL http://www.ccjm.org/content/69/4_suppl_2/SII-87.abstract AB