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| Characteristics | n = 23 (%) |
| Women | 11 (48) |
| Years in practice as an attending physician | 1 to 18 |
| Experience with lung ultrasound | |
| None | 10 (43) |
| Brief training | 9 (39) |
| Instructor | 4 (17) |
| Geographic Area | |
| Midwest | 1 (4) |
| Northeast | 9 (39) |
| Rocky Mountain | 11 (48) |
| South | 1 (4) |
