Variation in Assignment of the COPD Patients into a GOLD Group According to Symptoms Severity
Virginia Moya-Álvarez,1 Juan Luis Quevedo-Marín,2 Zichen Ji,3 Cristina Navarro-Jiménez,4 Rodrigo Jiménez-García,5 Ana López-de-Andrés,6 Alfonso Pérez-Trullén,7 Javier de Miguel-Díez3 1Faculty of Medicine, Francisco de Vitoria University, Madrid 28223, Spain; 2Rey Juan Carlos Univ