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European Journal of Obstetrics and Gynecology > 2003 > 108 > 1 > 19-24
Systematic and Applied Microbiology > 1997 > 20 > 3 > 418-422
European Journal of Obstetrics and Gynecology > 2003 > 108 > 1 > 19-24
Systematic and Applied Microbiology > 1997 > 20 > 3 > 418-422