Regional distribution of registry participants with treatment history
| Participants n=740 | Enrolment | ||
| 2003–2009 or before | After 2009 | ||
| 456 | 284 | ||
| Europe, n (%) | 339 (45.8) | 234 (51.3) | 105 (37.0) |
| North America, n (%) | 329 (44.5) | 187 (41.0) | 142 (50.0) |
| Latin America, n (%) | 52 (7.0) | 32 (7.0) | 20 (7.0) |
| Asia Pacific, n (%) | 20 (2.7) | 3 (0.7) | 17 (6.0) |