Table 1. Mutation carrier families genotyped.
| Population group | Number of families | Number of samples | Contributing centres |
|---|---|---|---|
| Russian | 26 | 28 | St-Petersburg |
| Latvian | 25 | 25 | Riga |
| Ukrainian | 5 | 6 | Toronto |
| Czech | 53 | 111 | Brno |
| Slovak | 5 | 8 | Bratislava |
| Polish | 27 | 81 | Szczecin, Paris, Toronto |
| Ashkenazi Jewish | 27 | 34 | Toronto, Montreal, Paris |
| Danish | 22 | 37 | Copenhagen, Odense |
| Dutch | 2 | 2 | Toronto |
| French | 41 | 41 | Paris |
| German/Italian | 2 | 4 | Toronto |
| Greek | 7 | 10 | Athens, Toronto |
| Braziliana | 3 | 3 | Toronto |
| 245 | 390 |
a
Families were recruited in Brazil and the samples are housed in Toronto.