Dentist drilling teeth:
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Heart monitor
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Medical laboratory, instrument noise
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Dentist brushing teeth
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Dentist, rinsing the mouth with water,
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Couch driven patient
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Respiratory mask
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Fluoroscopy
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Blood analyzer
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Blood transfusion apparatus
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Measure pressure, Electronic sphygmomanometer
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Pencil movement, EEG
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Hospital, operation, cardiomonitor, doctors
★★★★★