Education and pneumonia mortality: a trend analysis of its inequalities in Colombian adults by Nelson Alvis-Guzman, Nelson J. Alvis-Zakzuk, Ivan Arroyave, Carlos Castañeda-Orjuela, Fernando De La Hoz-Restrepo

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Evaluation of Streptococcus pneumoniae as a cause of acute otitis media in Colombia: A prospective study. by Wilfrido Coronell-Rodriguez, Rosanna Camerano, Juan Carlos Alvarado-Gonzalez, Alejandra Puerto, Josefina Zakzuk, Nelson R Alvis-Zakzuk, Lina Moyano-Tamara, Sebastian Medina, Claudia Beltran, Maria Betancur, Monica Rojas, Luis Enrique Farias, Hernando Pinzon-Redondo, Perla Villamor, Steven Osorio, Nelson Alvis-Guzmán

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