Comparability and validity of cancer registry data in the northwest of Russia

1. Barchuk, A.
2. Tursun-zade, R.
3. Belayev, A.
4. Moore, M.
5. Komarov, Y.
6. Moshina, N.
7. Anttila, A.
8. Nevalainen, J.
9. Auvinen, A.
10. Ryzhov, A.
11. Znaor, A.