3-year-old making progress after implant lets him hear for f

3-year-old making progress after implant lets him hear for first time
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Five months have gone by since the operation that allowed 3-year-old Grayson Clamp, born deaf, hear the voice of his father for the first time. While progress has been made, with Grayson spontaneously saying a few words, it appears he still has a lot of catching up to do. Dr. Jon LaPook reports.
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