Erratum to: medication prescription and adherence disparities in non valvular atrial fibrillation patients: an Italian portrait from the ARAPACIS study. - Raparelli V; Proietti M; Buttà C; Di Giosia P; Sirico D; Gobbi P; Corrao S; Davì G; Vestri AR; Perticone F; Corazza GR; Violi F; et al. (Internal and emergency medicine, 2015)