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Demographic and clinical features of the study sample.
| Controls (n = 6) | Cases (n = 4) | p-value∗ | |
|---|---|---|---|
| Gender (% male) | 67 | 75 | 1.00 |
| Mean age (years) | 56 | 58 | 0.61 |
| Hypertension (%) | 33 | 25 | 1.00 |
| Smokers (%) | 50 | 50 | 1.00 |
| Drug toxicity (%) | 33 | 50 | 1.00 |
| Treatment response (% refractory) | 17 | 100 | 0.05 |
∗The age comparison was conducted by the Wilcoxon signed-rank test; the other variables were compared by a chi-square test. P25, percentile 25; P75, percentile 75.
