TY  - JOUR 
T1  - Two competitive enzyme immunoassays for the detection of IgG class antibodies to hepatitis a antigen
JO  - Revista da Sociedade Brasileira de Medicina Tropical
A1  - Vitral, Claudia Lamarca
A1  - Gaspar, Ana Maria Coimbra
A1  - Yoshida, Clara Fumiko Tachibana
SN  - 0037-8682
UL  - 10.1590/S0037-86821991000200003
VL  - 24 
Y1  - 1991
PB  - Brasil 
ER  -