“Epidemiology of Invasive Pneumococcal Disease in Older People in Spain (2007-2009): Implications for Future Vaccination Strategies,” by Carmen Ardanuy, Jose Maria Marimon, Laura Calatayud, Montserrat Gimenez, Marta Alonso, Immaculada Grau, Roman Pallares, Emilio Perez-Trallero, and Josefina Linares (PLoS ONE 7(8): e43619. doi:10.1371/journal.pone.0043619, XML, HTML, and .pdf format, 7p.).
www.plosone.org/article/info%3Adoi%2F10.1371%2Fjournal.pone.0043619
