Bjornsdottir E, Janson C, Lindberg E, Arnardottir ES, Benediktsdottir B, Garcia-Aymerich J, Carsin AE, Real FG, Toren K, Heinrich J, Nowak D, Sanchez-Ramos JL, Demoly P, Arenas SD, Navarro RC, Schlunssen V, Raherison C, Jarvis DL, Gislason T. Respiratory symptoms are more common among short sleepers independent of obesity. BMJ Open Respir Res. 2017 Aug 30;4(1):e000206. doi: 10.1136/bmjresp-2017-000206
Urrutia I, Aguirre U, Sunyer J, Plana E, Muniozguren N, Martinez-Moratalla J. Changes in the prevalence of asthma in the Spanish cohort of the European Community Respiratory Health Survey (ECRHS-II). Arch. Bronconeumol. 2007 Aug;43(8):425-30.