(Q45764633)
Statements
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Risk of infection with Helicobacter pylori and hepatitis A virus in different groups of hospital workers (English)
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Rudi J
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Töppe H
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Marx N
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Zuna I
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Theilmann L
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Stremmel W
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Raedsch R
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1 February 1997
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92
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2
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258-262
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