Impact of R-Carvedilol on β2-Adrenergic Receptor-Mediated Spontaneous Calcium Release in Human Atrial Myocytes oleh Sergi Casabella-Ramón, Verónica Jiménez-Sábado, Carmen Tarifa, Sandra Casellas, Tien Tina Lu, Paloma Izquierdo-Castro, Ignasi Gich, Marcel Jiménez, Antonino Ginel, José M. Guerra, S. R. Wayne Chen, Raul Benítez, Leif Hove-Madsen