P808Sleep apnea detection by a cardiac resynchronization device integrated thoracic impedance sensor - a validation study against the gold standard polysomnography. (19th March 2018) - Barbieri, F; Dichtl, W; Brandauer, E; Heibreder, A; Stefani, A; Adukauskaite, A; Schgoer, W; Hintringer, F; Hoegl, B