Effect of the different 13-valent pneumococcal conjugate vaccination uptakes on the invasive pneumococcal disease in children: Analysis of a hospital-based and population-based sur... oleh Juan Picazo, Jesús Ruiz-Contreras, Juan Casado-Flores, Sagrario Negreira, Fernando Baquero, Teresa Hernández-Sampelayo, Enrique Otheo, Cristina Méndez, Heracles Study Group