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Andonov, A., Teoharov, P. & Bakalova, S. Predominance of hepatitis C virus genotype 1b in Bulgaria. Eur. J. Clin. Microbiol. Infect. Dis. 15, 521–523 (1996). https://doi.org/10.1007/BF01691324
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DOI: https://doi.org/10.1007/BF01691324