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3M 2176 Littmann Master Cardiology Smoke Chestpiece Stethoscope with 27" Black Tube: Amazon.com: Industrial & Scientific
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3M 6163 Littmann Cardiology IV Black Chestpiece Stethoscope with 27" Black Tube: Amazon.com: Industrial & Scientific
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Amazon.com: Reliance Medical - Tubo de repuesto (estetoscopio binaural) compatible con Littmann® Classic II Pediatric, Classic II SE, Select, Master Classic II y estetoscopio infantil, color rosa claro : Industrial y Científico
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