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Clinical Characteristics of the Referred and Control Subjects.
| Subject Group | Referred (n = 50) | Control Middle-aged (n = 12) | Control Aged (n = 20) |
| Age (years) | 61.4 ± 5.9 | 42.7 ± 3.4 | 62.4 ± 6.7 |
| PSA (ng/ml) | 7.6 ± 7.1 | <2.0 | <4.0 |
| Prostate volume (cm3) | 40.4 ± 24.6 | 22.7 ± 4.2 | 35.6 ± 29.4 |
