In China, 3000 m above sea level is always considered as high altitude. China has the largest plateau area in the world, which includes the whole of Tibet, and part of Qinghai, Xinjiang, Yunnan, and Sichuan provinces. The plateau area is 257.2 X 10~4 km~2, which accounts for approximately 26.8% of the total area of China. As of 2006, approximately 12 million people were permanently living on the Qinghai-Tibetan Plateau between 2200 m and 5200 m altitude. Most of the population live dispersed around the 3000 m to 4500 m level, but some soldiers live at an altitude of above 5000 m. Therefore, knowing how to manage healthcare on the plateau is an important task for medical workers and all the high altitude population.
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