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Baseline characteristics of the patients
| Characteristic | Patients (n = 7) |
|---|---|
| Age | |
| Mean ± SD | 63.9 ± 5.5 |
| Median (range, year) | 66 (56–69) |
| Sex (%) | |
| Female | 1 (14) |
| Male | 6( 86) |
| Histologic diagnosis (%) | |
| Adenocarcinoma | 6 (86) |
| Squamous cell carcinoma | 1 (14) |
| Clinical disease stage | |
| I | 3 (43) |
| II | 3 (43) |
| III | 1 (14) |
| Smoking status ‐ No. (%) | |
| Never | 2 (29) |
| Former or current | 5 (71) |
SD, standard deviation.
