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Demographic characteristic of involved subjects
| Group | Number of subjects | Age (month) |
|---|---|---|
| Male | 18 | 48.6±3.0a |
| Female | 17 | 48.2±3.3a |
| Total | 35 | 48.4±3.1 |
a No statistical differences (P=0.640) observed between males and females according to Student’s t-test. Data are expressed as number or mean±standard deviation (SD).
