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Amazon.com: 3M Littmann Stethoscope, Classic II Teaching, Black and Burgandy Tube, Stainless Steel Chestpiece, 40 inch, 2138 : Industrial & Scientific
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3M Littmann Master Classic II Stethoscope, Black Plated Chestpiece and Eartubes, Black Tube, 27 inch, 2141 - Walmart.com
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