Department of Cardiology;
the 940th Hospital of Joint Logistics Support Force of Chinese PLA;
Lanzhou;
China;
Department of Cardiology;
the First Medical Center of Chinese PLA General Hospital;
Beijing;
China;
Department of Cardiology;
the 980th Hospital of Joint Logistics Support Force of Chinese PLA;
Shijiazhuang;
China;
Department of Infectious Diseases;
Huoshenshan Hospital;
Wuhan;
China;
Acute; myocardial; infarction; Angina; Coronavirus; disease; 2019; Electrocardiogram; Stethoscope;