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Subclassification information and the number of substage samples in the G subtype
| Stages | Substages (n = sample number) |
|---|---|
| Normal stage (N–G stage) | G_1 (n = 47) |
| Hyperplasia Brunner’s stage (H–G stage) | G_2 (n = 19), G_2_1 (n = 7) |
| Adenoma Brunner’s stage (A–G stage) | G_3 (n = 22), G_3_1 (n = 1), G_3_2 (n = 1) |
