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Amazon.com: 3M Littmann Stethoscope, Master Cardiology, Black Tube, Stainless Steel Chestpiece, 27 inch, 2160 : Industrial & Scientific
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Amazon.com: 3M Littmann Stethoscope, Classic II Pediatric, Raspberry Tube, Stainless Steel Chestpiece, 28 inch, 2122 : Industrial & Scientific
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Amazon.com: 3M™ Littmann® Cardiology IV™ Diagnostic Stethoscope, High Polish Smoke-Finish Chestpiece, Black Tube, Black Stem and Black Headset, 27 inch, 6232 : Industrial y Científico
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Amazon.com: 3M™ Littmann® Cardiology IV™ Diagnostic Stethoscope, High Polish Smoke-Finish Chestpiece, Black Tube, Black Stem and Black Headset, 27 inch, 6232 : Industrial y Científico
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