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Autor Blas, Clemente de |
Documentos disponibles escritos por este autor (1)



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Fuster Siebert, Vicente ; Zuluaga Arias, Pilar ; Colantonio, S. ; Blas, Clemente de | Cambridge Univ. Press | 2008-02The increased incidence of multiple deliveries in Spain, in addition to changes in age at maternity and parity, is attributed to assisted reproductive treatments, but the relative contribution of the latter to this rise remains uncertain, due to[...]