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| Race, Ethnicity | N (%) | Sex | N (%) | Age (mean+/−SD) | Age (range) |
| African-American (AA) | 33 (38) | M | 28 (85) | 33.7+/−7.5 | 21.5–45.5 |
| F | 5 (15) | ||||
| Caucasian (CE) | 52 (56) | M | 43 (83) | 35.8+/−7 | 20.5–49.5 |
| F | 9 (17) | ||||
| Others | 10 (11) | M | 7 (70) | 30.2+/−5 | 22.2–40.3 |
| F | 3 (30) |
Ethnic group “Others” included 5 Hispanics- and 5 individuals of more than one race.
