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Revue Roumaine De Virologie (Bucharest, Romania : 1990)|July 1, 1990
[The virological study of a certified focus of acute respiratory diseases in a half-closed community]N Steiner, A Mihail, C Berca, et al.
Revue Roumaine De Virologie (Bucharest, Romania : 1990)|January 1, 1992
[The possibility of the vertical intrapartum transmission of the HIV and HB viruses]A L Calomfirescu, C Berca, V Mihăescu, et al.
Virologie|April 1, 1977
Incidence of hepatitis B surface antigen (HBsAg) in some areas of RomaniaN Steiner, V T Babeş, C Berca, et al.
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