Efficacy and safety of fruquintinib alone and in combination with PD⁃1 inhibitors for postline treatment of advanced metastatic colon cancer 
HU Lang, LIN Xiaoling, TANG Wenjun.
The Journal of Practical Medicine . 2023, (15): 1966 -1973 .  DOI: 10.3969/j.issn.1006-5725.2023.15.019