Sony today announced the latest addition to its acclaimed Alpha 7R series full-frame mirrorless camera line-up; the extremely versatile, powerful Alpha 7R IV (model ILCE-7RM4). Sony Alpha 7R IV is World’s first..
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Every year, more than a million Americans receive an artificial hip or knee prosthesis. Such implants are designed to last many years, but in about 17 percent of patients who receive a..