Immunization schedule of the Spanish Association of Pediatrics: 2012 recommendations D. Moreno-Pérez, F.J. Álvarez García, J. Aristegui Fernández, F. Barrio Corrales, M.J. Cilleruelo Ortega, J.M. Corretger Rauet, J. González-Hachero, T. Hernández-Sampelayo Matos, M. Merino Moína, L. Ortigosa del Castillo, J. Ruiz-Contreras