Health-related quality of life and healthcare costs of symptoms and cardiovascular disease events in patients with atrial fibrillation: a longitudinal analysis of 27 countries from... by Walli-Attaei, M, Little, M, Luengo-Fernandez, R, Gray, A, Torbica, A, Maggioni, AP, Bairami, F, Huculeci, R, Aboyans, V, Timmis, AD, Vardas, P, Leal, J