Authors' contributions: LLZ, ZAK and ZGT participated in the drafting of the manuscript or critical revision of the manuscript for important intellectual content, and provided approval of the final submitted version.

Funding: This work was supported by the Zhejiang Provincial Natural Science Foundation of China (No. LGF19H290004).

Conflicts of interest: The authors disclose no conflicts.

Corresponding author of the referenced paper: Ajay Goel, e-mail: [email protected] .

Title of the referenced paper: A Liquid Biopsy Assay for Noninvasive Identification of Lymph Node Metastases in T1 Colorectal Cancer (https://doi.org/10.1053/j.gastro.2021.03.062)