Authors: Jing Yu Wang; Fang Han; Song X Dong; Jing Li; Pei An; Xiao Zhe Zhang; Yuan Chang; Long Zhao; Xue Li Zhang; Ya Nan Liu; Han Yan; Qing Hua Li; Yan Hu; Chang Jun Lv; Zhan Cheng Gao; Kingman P Strohl Journal: Sleep Date: 2016-04-01 Impact factor: 5.849