the prevalence of antibodies to immunoglobulin a ( iga ) was studied in eighty-three subjects with selective iga deficiency ( sigad ) , thirty-three normal individuals , thirty-two children with juvenile rheumatoid arthritis ( jra ) and normal or elevated iga , seventeen children with systemic lupus erythematosus ( sle ) and normal or elevated iga , and thirteen patients with hypogammaglobulinaemia .
C0027361
individuals
C0008059
children