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Demographic and practice characteristics of study participants (total N = 29).
| Characteristic | Number (%) |
| Male | 9 (31) |
| Mean age in years (range) | 44 (29–72) |
| Mean years practice (range) | 14 (2–43) |
| Practice Setting | |
| Private practice | 20 (69) |
| University practice | 3 (10) |
| Health maintenance organization | 3 (10) |
| Community health clinic | 3 (10) |
