Telephone dispatcher-assisted cardiopulmonary resuscitation in Italy. A picture from a nationwide survey. (February 2017) - Di Marco, Samantha; Petacco, Mariella; Semeraro, Federico; Scapigliati, Andrea; Boccuzzi, Adriana; Luca, Marco De; Panzarino, Brigida; Cataldi, Walter; Scelsi, Silvia; Ristagno, Giuseppe