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<h2>Gathering Data</h2>
<p>Before the sphygmograph was developed, physicians assessed pulse strength
  by placing their fingers on a patient&#8217;s wrist and feeling for arterial
  resistance. The sphygmograph offered a more consistent method to asses, compare,
  and present information about the strength of the pulse. Dr. Mary Putnam Jacobi
  used the device in her research.</p>
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