How to choose a stethoscope, video

There are many different stethoscopes on the market. Some of them are cheap, others are very expensive.. You can buy conventional or digital stethoscope. Your ability to hear heart sound depends on the quality of your stethoscope. Your stethoscope can be used for many years.
So, to choose a stethoscope is like to choose a friend. In this video we will give you some necessary advice.

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