Records first use of telegraphy to record and measure the heart beat and pulse, written and published by the patient, who lived to the age of 45. This was done in Boston with an instrument placed against Groux’s chest…
Records first use of telegraphy to record and measure the heart beat and pulse, written and published by the patient, who lived to the age of 45. This was done in Boston with an instrument placed against Groux’s chest…