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Inspired by innovation: How the 3M™ Littmann® stethoscope became one of medicine's most powerful dia
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3M Littmann Stethoscope, Cardiology IV, Black Tube, Black Chestpiece, 27 Inch, 6163: Amazon.com: Industrial & Scientific
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Amazon.com: 3M Littmann Classic III Monitoring Stethoscope, Black Edition Chestpiece, Black Tube, 27 inch, 5803 + 40007 Stethoscope Identification Tag, Black : Industrial & Scientific
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