Chronic obstructive pulmonary disease and community acquired pneumonia: Additional studies are required

Affiliations

• ¹ Respiratory Department, Hospital General Universitario Gregorio Marañón, Facultad de Medicina, Universidad Complutense de Madrid (UCM), Instituto de Investigación Sanitaria Gregorio Marañón (IiSGM), Madrid, Spain. Electronic address: javier.miguel@salud.madrid.org.
• ² Preventive Medicine and Public Health Teaching and Research Unit, Health Sciences Faculty, Rey Juan Carlos University, Alcorcón, Madrid, Spain.
• ³ Internal Medicine Department, Hospital Universitario Clínico San Carlos, Madrid, Spain.
• ⁴ Internal Medicine Department, Hospital General Universitario Gregorio Marañón, Madrid, Spain.