Exploring the perceptions and barriers of nurses working in remote areas on tele-educational delivery of pharmacy knowledge in Henan, China: a qualitative study - Xiao Zhang; Yan Liang; Yingjie Zhang; Xiang Zhang; Xiaojian Zhang; Wan Zhang; Xuedong Jia; Shuzhang Du; Zhao Yin; Xiali Yao; Pei Su (BMJ Open, 2022)