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Clinical characteristics of study subjects.
| Variable | Character | Number of samples |
|---|---|---|
| Age (years) Median age (48 ± 8.2∗) |
<48/>48 | 47/53 |
| Estrogen receptor | ER+/ER− | 55/45 |
| Progesterone receptor | PR+/PR− | 56/44 |
| HER status | HER+/HER− | 40/57 |
∗Median age with standard deviation.
