| Source | n | % |
|---|---|---|
| Recommended by personal physician | 14 | 10% |
| Recommended by relatives/friends | 57 | 41% |
| Recommended by hospital physicians | 21 | 15.1% |
| Recommended by genetic counselor | 21 | 15.1% |
| Own research, including the Internet | 22 | 15.8% |
| No comment | 4 | 3% |
| Total | 139 | 100% |