Table 3. Demographics.
| Characteristics | n=38, No. (%) |
|---|---|
| Age in year, mean (range) | 71 (minimum 33.5, maximum 92.6 years) |
| Gender | |
| Male | 22 (58%) |
| Female | 16 (42%) |
| Risk factors | |
| Smoking | 7 (18%) |
| Atopy | 2 (5%) |
| HIV infection | 1 (3%) |
| Immunosuppression | 5 (13%) |
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