Effect of DSA guided gradient pressure method with staged balloon dilatation for anastomotic stenosis in esophageal cancer and its effect on nutritional indicators 
LI Guo, YANG Fengjuan, GUO Xingxing, DING Shuming.
The Journal of Practical Medicine . 2023, (13): 1657 -1662 .  DOI: 10.3969/j.issn.1006⁃5725.2023.13.011