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3M 2176 Littmann Master Cardiology Smoke Chestpiece Stethoscope with 27" Black Tube: Amazon.com: Industrial & Scientific
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Classic Black Master Cardiology Clinical Single Head Heart Estetoscopio Professional Cute Doctor Nurse ENT Medical Stethoscope
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Amazon.com: Estetoscopio maestro para cardiología marca 3M Littmann., 27", negro, (Black Tube), 1 : Industrial y Científico
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