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1. Wash your hands before wearing a mask. 2. Hold the ear cord with both hands, with the dark side out (blue) and the light side in (suede white). 3. Place the side of the mask with the wire (a small strip of hard) on the nose, pinch the wire according to your nose shape, and then pull the mask completely down to cover the mouth and nose

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The COVID 19 (also named as 2019 nCoV) is a very contagious novel coronavirus. Though most patients contracted the 2019 nCoV will likely have mild symptoms with good prognosis, some will develop severe acute respiratory infection, pneumonia, or acute respiratory distress syndrome. Some of these patients will need anesthesia care for endotracheal intubation, critical care management and

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China has high and increasing annual rates of occupational lung diseases such as pneumoconiosis and silicosis. In contrast, Australia and the United States of America (USA) have greatly lowered their annual rates of lung diseases since the 1970s. This paper systematically compared and analysed the multi elements of coal dust management and health management in these three countries to provide

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