Lendeckel, U., Müller, C., Röcken, C., Laube, B., Träger, M., Huth, C., et al. (2005). Expression of Opioid Receptor Subtypes and Their Ligands in Fibrillating Human Atria. PACE, 28(S1), S275-S279. doi:10.1111/j.1540-8159.2005.00073.x.