Impact of pneumococcal conjugate vaccine in children morbidity and mortality in Peru: time series analyses - Suarez, Victor; Michel, Fabiana; Toscano, Cristiana M; Bierrenbach, Ana Luiza; Gonzales, Marco; Alencar, Airlane Pereira; Ruiz Matus, Cuauhtemoc; Andrus, Jon K; Oliveira, Lucia H. de (Vaccine, 2016)