TY - SER AU - Cotes, Karol TI - Clinical characteristica of patients hospitalized with severe respiratory illness during influenza seasons in the cities of during influenza seasons in the cities of Bogotá and Manizales, Colombia 2000-2006 KW - FACTORES DE RIESGO KW - INSUFICIENCIA RESPIRATORIA KW - NEUMONÍA KW - VIRUS DE LA INFLUENZA A ER -