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  Indian J Med Microbiol
 

Figure 1: Evolution of electrocardiogram machine – (a) the initial bulky galvanometer device discovered by Einthoven. (b) Conventional modern day portable electrocardiogram machine. (c) Handheld smartphone electrocardiogram device (SANKET LIFE).

Figure 1: Evolution of electrocardiogram machine – (a) the initial bulky galvanometer device discovered by Einthoven. (b) Conventional modern day portable electrocardiogram machine. (c) Handheld smartphone electrocardiogram device (SANKET LIFE).