Researchers have created a new smartphone app that can detect fluid behind the eardrum by simply using a piece of paper and a smartphone's microphone and speaker.
from Top Technology News -- ScienceDaily https://www.sciencedaily.com/releases/2019/05/190515144022.htm
from Top Technology News -- ScienceDaily https://www.sciencedaily.com/releases/2019/05/190515144022.htm
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