Vázquez Fernández ME, Bustamante Marcos P, Herrero Bregón B, Muñoz Moreno MF, de Santiago García M, Barriada Álvarez L. Unfunded childhood vaccines. What is the coverage in an urban healthcare center? Rev Pediatr Aten Primaria. 2012;14:21-6.
García Vera C. The state of pneumococci asymptomatic carrier in children and its relation to the invasive disease. What has changed after the conjugated vaccine introduction? Rev Pediatr Aten Primaria. 2010;12:457-82.