The stethoscope: Timeless tool or outdated relic? 0 08.03.2016 08:01 The Post and Courier To hear a patient’s heart, doctors used to just put an ear up to a patient’s chest and listen. Then, in 1816, things changed. Партнёры Smi24.net Все новости за 24 часа Музыкальные новости Агрегатор новостей 24СМИ
