Treatment implications of renal disease in patients with atrial fibrillation: The BALKAN‐AF survey oleh Monika Kozieł, Stefan Simovic, Nikola Pavlovic, Milan Nedeljkovic, Aleksandar Kocijancic, Vilma Paparisto, Ljilja Music, Elina Trendafilova, Anca Rodica Dan, Sime Manola, Zumreta Kusljugic, Gheorghe‐Andrei Dan, Gregory Y. H. Lip, Tatjana S. Potpara, the BALKAN‐AF Investigators