Demographics and baseline characteristics
| Characteristics | Baseline characteristics |
| Patients n | 18# |
| Sex | |
| Female | 2 (11) |
| Male | 16 (89) |
| Race | |
| White | 17 (94) |
| Multiracial | 1 (6) |
| Age yrs | 33.3±12.6 |
| Body mass index kg·m−2 | 24.2±2.0 |
| FEV1 L | 4.344±0.878 |
Data are presented as n (%) or mean±sd, unless otherwise stated. FEV1: forced expiratory volume in 1 s. #: one of the 18 participants discontinued at follow-up for prednisolone treatment after experiencing a motor vehicle accident, unrelated to treatment. This participant completed all treatment-related procedures, however, and was included in the analysis