Comparison of two models of factors associated to hospital admission for COPD
Bernardino Alcázar Navarrete, Alberto Herrejόn Silvestre, Cayo García Polo, Luis Alberto Ruiz, Patricia García Sidro, Gema Tirado Conde, Jose Antonio Ros Lucas, Carlos Martínez Rivera, Joaquín Costán, Sagrario Mayoralas, Marc Miravitlles
European Respiratory Journal Sep 2011, 38 (Suppl 55) p541;