RT Journal Article SR Electronic T1 CARDIAC AUTOMATICITY EFFECTS OF CAFFEINE AND NICOTINE I. CAFFEINE INFLUENCE UPON THE RESPONSE OF THE SINO-AURICULAR STRIP JF Journal of Pharmacology and Experimental Therapeutics JO J Pharmacol Exp Ther FD American Society for Pharmacology and Experimental Therapeutics SP 213 OP 221 VO 54 IS 2 A1 RALPH H. CHENEY YR 1935 UL http://jpet.aspetjournals.org/content/54/2/213.abstract AB