Validity of ICD-9-CM codes for breast, lung and colorectal cancers in three Italian administrative healthcare databases: A diagnostic accuracy study protocol

1. Abraha, I.
2. Serraino, D.
3. Giovannini, G.
4. Stracci, F.
5. Casucci, P.
6. Alessandrini, G.
7. Bidoli, E.
8. Chiari, R.
9. Cirocchi, R.
10. De Giorgi, M.
11. Franchini, D.
12. Vitale, M.F.
13. Fusco, M.
14. Montedori, A.