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Amazon.com: 3M 2176 Littmann Master Cardiology Smoke Chestpiece Stethoscope with 27" Black Tube : Industrial & Scientific
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Amazon.com: eSteth Cardiology Stethoscope - Professional Tool for Cardio Diagnostic - Ultra Sensitive Single Head Chest Piece, Broad Headset - Extra Ear Tips & Non-Chill Ring - 30" Tubing, Black Stethoscope :
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