Creation and validation of an instrument to quantify attitudes, knowledge and difficulties in the approach to social problems Rafael Jiménez-Alés; Raquel Páez-González; María Llanos de la Torre-Quiralte; María Luisa Poch-Olivé; Nisa Boukichou-Abdelkader; Eva María Andrés Esteban;

Sleep apnoea-hypopnoea syndrome in the obese and non-obese: Clinical, polysomnographical and clinical characteristics Elena Martínez Cuevas; Carmen Muñoz Peláez; Estrella Ordax Carbajo; Ana Isabel Navazo Eguia; Lourdes Martín Viñe; Aranzazu Prieto Jimeno; María Luz Alonso-Álvarez;