P W. Stengel, et.al., M(2) and M(4) receptor knockout mice: muscarinic receptor function in cardiac and smooth muscle in vitro., The Journal of pharmacology and experimental therapeutics, 2000, 292
P W. Stengel, et.al., M(2) and M(4) receptor knockout mice: muscarinic receptor function in cardiac and smooth muscle in vitro., The Journal of pharmacology and experimental therapeutics, 2000, 292