By Kirkkola Anna-Leena   Mattila Kari   Virjo Irma   in The European Journal of Contraception and Reproductive Health Care

ISSN:1473-0782|10|2|87-92

Informa Healthcare‎(2005)‎

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By Leena Mattila   Ville Valtonen   Veli-Jukka Anttila   in Scandinavian Journal of Gastroenterology

ISSN:0036-5521|41|2|242-244

Informa Healthcare‎(2006)‎

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By Marja-Leena Mattila   Paivi Rautava   Sirkka Jaakkola   Ansa Ojanlatva   Matti Sillanpaa   in Acta Odontologica Scandinavica

ISSN:0001-6357|66|3|189-192

Informa Healthcare‎(2008)‎

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