Juan Mayordomo-Colunga*, Alberto Medina, Corsino Rey, Andrés Concha, Sergio Menéndez, Marta Los Arcos and Irene García
* Corresponding author: Juan Mayordomo-Colunga jmcolunga@hotmail.com
BMC Pediatrics 2010, 10:29 doi:10.1186/1471-2431-10-29
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