Antiarrhythmic effect of EDIHYP, a synthetic analogue of acetylcholine and its bioelectric mechanism: F.Z. Meerson, N.A. Abdikaliev, I.Ya. Kalvinsh. Institute of General Pathology and Pathological Physiology of the USSR AMS, Moscow, Kazakh Scientific Research Institute of Cardiology of the KazSSR Ministry of Public Helth, Alma-Ata; Institute of Organic Synthesis of the Latvian SSR Academy of Sciences, Riga