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| Age (mean ± standard deviation) | 65.29 ± 16.23 years |
| Sex (female/ male, %) | 61.9/38.1% |
| Smoking (yes %) | 19.0% |
| Diseases (mean, range) 8. Medications (mean, range) |
1.76, 0–4 2.95, 0–9 |
| Medications causing xerostomia (mean, range) | 1.33, 0–4 |
