Evaluation and modeling of diaphragm displacement using ultrasound imaging for wearable respiratory assistive robot oleh Yan Zhang, Danye Li, Fengyao Zhang, Zongyu Wang, Lei Xue, Xiaolu Nan, Nianming Li, Xilai Tan, Weidong Guo, Yuru Zhang, Yuru Zhang, Hongmei Zhao, Qinggang Ge, Dangxiao Wang, Dangxiao Wang, Dangxiao Wang