The variability of respiratory symptoms and associated factors in COPD
Title:
The variability of respiratory symptoms and associated factors in COPD
Author:
Miravitlles, Marc Izquierdo, José Luis Esquinas, Cristina Pérez, Maite Calle, Myriam López-Campos, José Luis Rodríguez González-Moro, José Miguel Casanova, Ciro Esteban, Cristóbal de Lucas, Pilar