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Patient demographics and characteristics at baseline.
| Number | 25 |
| Gender | 13 males (52%); 12 females (48%) |
| Age (mean ± SD; range) | 55.1 ± 10.5 years; 44–79 |
| Non smokers | 16 (64%) |
| Light smokers * | 9 (36%) |
SD: standard deviation; * <10 cigarettes/day.
