Retraction Note: BMC Oral Health (2019) 19:290 10.1186/s12903-019-0980-5
The Editor has retracted this article. After publication concerns were raised that the data presented are owned by the National Congenital Malformation Registries network of Italy [Emilia-Romagna Registry of Birth Defects (IMER) and Registro Toscano Difetti Congeniti (RTDC)]. The authors have not been able to demonstrate ownership of the data in this article. G. Galluccio and A. Impellizzeri do not agree to this retraction. I. Giannantoni, A. Polimeni and E. Barbato have not responded to correspondence from the Editor about this retraction.
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