Evaluating clinical effectiveness of 13-valent pneumococcal conjugate vaccination against pneumonia among middle-aged and older adults in Catalonia: results from the EPIVAC cohort... oleh Angel Vila-Corcoles, Olga Ochoa-Gondar, Cinta de Diego, Eva Satue, María Aragón, Angel Vila-Rovira, Frederic Gomez-Bertomeu, Ramon Magarolas, Enric Figuerola-Massana, Xavier Raga, Mar O. Perez, Frederic Ballester