| Demographic | Participants (n) |
| Gender |
|
| Males | 8 |
| Females | 46 |
| Age |
|
| 18- to 39-years | 26 |
| 40- to 59-years | 26 |
| over 60 years | 2 |
| Residence |
|
| Illinois, USA | 35 |
| Other states | 19 |