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3M™ Littmann® CORE Digital Stethoscope, Black Chestpiece, Tube, Stem and Headset, 27 inch, 8480: Amazon.com: Industrial & Scientific
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Amazon.com: 3M 5803 Littmann Classic III Black Edition Chestpiece Monitoring Stethoscope, 27" Black Tube : Industrial & Scientific
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Amazon.com: 3M 6163 Littmann Cardiology IV Black Chestpiece Stethoscope with 27" Black Tube : Industrial & Scientific
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