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Campaña H, Ermini M, Aiello HA, Krupitzki H, Castilla EE, López-Camelo JS; Latin American Collaborative Study of Congenital Malformations Study Group.Campaña H, et al.J Ultrasound Med. 2010 Feb;29(2):203-12. doi: 10.7863/jum.2010.29.2.203.J Ultrasound Med. 2010.PMID: 20103790