Validation of a portable monitor compared with polysomnography for screening of obstructive sleep apnea in polio survivors oleh Qidi Ding, Jianghua Liu, Jinxian Wu, Juan Du, Xiao Li, Meng Wang, Yunliang Sun, Yan Yu, Jingyu Wang, Ting Sun, Chi Zhang, Changjun Lv, Kingman P. Strohl, Fang Han, Xiaosong Dong