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ISSN:1568-542X|45|1-2|213-215

Brill‎(1994)‎

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By Hagelskjaer Lena   Sørensen Inger   Randers Else   in Scandinavian Journal of Infectious Diseases

ISSN:0036-5548|30|3|309-311

Informa Healthcare‎(1998)‎

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