Audiology Devices Market Is Expected to Be Worth $9,542.3 Million By 2020: New Report By Grand View Research, Inc. San Francisco, California, Jan. 29, 2015 (GLOBE NEWSWIRE) -- The global market for audiology devices is expected to reach USD 9,542.3 million by 2020, growing at an estimated CAGR of 5.0% from 2014 to...