Cardiophone.
Bertazzoni
G
G
Istituto di Clinica Medica VI, Università, La Sapienza, Roma, Italy.
Aguglia
F
F
D004562:Electrocardiography; D004632:Emergency Medical Services; D006801:Humans; D007558:Italy; D008991:Monitoring, Physiologic / Q000295:instrumentation; D013685:Telecommunications; D013689:Telephone