A comparative study on the tip position of peripherally inserted central catheter inserted at two forward P-wave amplitudes by intracavitary electrocardiogram in cancer patients - Wang, Xinpeng; Yang, Yong; Dong, Jing; Wang, Xiaozheng; Zheng, Yuanyuan; Chen, Jie; Shen, Yanfen; Wang, Hongzhi (Annals of Palliative Medicine, 2021)