Adverse drug events in patients admitted to an emergency department: an analysis of direct costs - Meier, F; Maas, R; Sonst, A; Patapovas, A; Müller, F; Plank-Kiegele, B; Pfistermeister, B; Schöffski, O; Bürkle, T; Dormann, H (Pharmacoepidemiol Drug Saf, 2015)