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Ricardo M Fernandes*, Brígida Robalo, Cláudia Calado, Susana Medeiros, Ana Saianda, Joana Figueira, Rui Rodrigues, Cristina Bastardo and Teresa Bandeira
* Corresponding author: Ricardo M Fernandes ricardocunhafernandes@clix.pt
BMC Pediatrics 2011, 11:112 doi:10.1186/1471-2431-11-112