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Patient characteristics.
| Superficial group | Invasive group | Healthy controls | |
|---|---|---|---|
| Patients (male/female) | 11/9 | 16/9 | 14/6 |
| Mean age (range) (year) | 52·3 (25–71) | 50·1 (29–74) | 49·2 (20–65) |
| Clinical stage (n, %) | |||
| Ta | 12 (60) | – | |
| T1 | 8 (40) | – | |
| T2 | – | 5 (20) | |
| T3a | – | 9 (36) | |
| T3b | – | 8 (32) | |
| T4, N+, M0 | – | 3 (12) | |
| Grade (n, %) | |||
| I | 5 (25) | 7 (28) | |
| II | 11 (55) | 10 (40) | |
| III | 4 (20) | 8 (32) |
