anti-b19-igg antibodies were tested for by the elisa method in 768 sera , 76 from children and juveniles , aged 1-15 years , attending the outpatients department of the children 's clinic , university of munich , and 692 from persons , aged 18-68 years , attending the blood donor service of the bavarian red cross in munich .
C0008059
children 's
C0027361
persons