A survey of acute mountain sickness and vital signs in subjects ascending to Lhasa via the Qinghai-Tibet train

1 Department of High Altitude Disease, College of High Altitude Military Medicine, Third Military Medical University, Chongqing 400038, China. 2 Key Laboratory of High Altitude Medicine, Ministry of Education, Third Military Medical University, Chongqing 400038, China. 3 Department of Pathophysiology and High Altitude Physiology, College of High Altitude Military Medicine, Third Military Medical University, Chongqing 400038, China.