 In order to assess the incidence of unknown AF as well as accomplish the secondary objectives of this study, two follow-ups by means of telephone interviews are performed. First, all subjects with a positive test result are called 8 weeks after the screening in the pharmacies was conducted. The subject is asked several questions concerning personal datademographics, the stroke risk CHA2DS2-VASc, the medical history regarding to dyspnea and stroke, the bleeding risk HAS-Bled, the medication, the device, diagnostic, the therapy, the Intervention and the mace. 12 months after the screening in the pharmacies was performed, all participating subjects were called. The list of questions is similar to the one that is used during the first telephone interviews after eight weeks. 