Epidemiology of atrial fibrillation in Turkey: preliminary results of the multicenter AFTER study oleh Faruk Ertaş, Hasan Kaya, Zekeriya Kaya, Serkan Bulur, Nuri Köse, Mehmet Gül, Nihan Kahya Eren, Çağlar Emre Çağlıyan, Bayram Köroğlu, Bülent Vatan, Göksel Acar, Murat Yüksel, Mehmet Zihni Bilik, Selçuk Gedik, Ziya Şimşek