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| Factors | Healthy volunteers (n = 14) | HNSCC (n = 27) | p value (Controls vs. HNSCC) |
|---|---|---|---|
| Age (median, range) | 52 (22–64) | 71 (48–94) | 0.009 |
| Gender (M/F) | 8/6 | 23/4 | 0.05 |
| Sub-site | |||
| Hypopharynx | 7 | ||
| Larynx | 20 | ||
| Treatment | |||
| Radiotherapy alone | 19 | ||
| Chemoradiotherapy | 8 |
