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Do you really need to use hand sanitizer? Dr. Natalie says…

Do you really need to go the dentist twice a year? Is hand sanitizer a good thing? NBC News medical contributor Dr. Natalie Azar shares her answers to frequent questions about germs and health.
/ Source: TODAY

Do you really need to go the dentist twice a year? Is hand sanitizer a good thing? NBC News medical contributor Dr. Natalie Azar shares her answers to frequent questions about germs and health.