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Characteristics of study subjects (n=11).
| Characteristics | |
|---|---|
| Age (years) | 61.2±13.7 |
| <50 | 2 |
| 50–69 | 5 |
| >70 | 4 |
| Sex | |
| Male | 6 |
| Female | 5 |
| Race/ethnicity | |
| Black | 6 |
| Hispanic | 5 |
No reports of bronchitis, respiratory illness, diabetics, or prior myocardial infarction. No subject taking β-blockers.
