Metabolomic profiles in lung cancer subjects and healthy controls. Influence of smoking tobacco exposure - Perez-Grovas, Ricardo Aguilar; Gandullo, Eva Vazquez; Leblic, Belen Callejon; Fernandez, Macarena Gonzalez; Guzman, Jesus Gravalos; Barrera, Tamara Garcia; Ramos, Jose Luis Sanchez; Perez, Jose Antonio Maldonado; Zara, Maria Pilar Munoz; Ariza, Jose Luis Gomez; Vega, Antonio Pereira (EUROPEAN RESPIRATORY JOURNAL, 2015)