Rev Port Pneumol (2006). 2015 Dec 31. pii: S2173-5115(15)00195-5. doi: 10.1016/j.rppnen.2015.10.013.
Letter to the Editor.
Maria Alexandra Mineiro, Pedro Marques-da-Silva, Marta Alves, Daniel Virella, Maria José Gomes, João Cardoso.
Rev Port Pneumol (2006). 2015 Dec 31. pii: S2173-5115(15)00195-5. doi: 10.1016/j.rppnen.2015.10.013.
Letter to the Editor.