[1] Hosp Barbanza Oleiros, Serv Pediat, Ribeira 15993, A Coruna, Spain
[2] Complex Hosp Univ Santiago de Compostela, Dept Pediat, Serv Neonatol, Santiago De Compostela, A Coruna, Spain
[3] Inst Invest Sanitarias Santiago de Compostela IDI, Santiago De Compostela, Spain
[4] Complex Hosp Univ Santiago de Compostela, Unidad Diag & Tratamiento Enfermedades Metab, Santiago De Compostela, A Coruna, Spain
[5] CIBERER, Zaragoza, Spain