1. Boring CC, Squires TS, Tong T. Cancer statistics, 1991. CA Cancer J Clin 1991; 41: 19-36.
2. Breast cancer in aging women. A population based study of contrasts in stage, surgery and survival;Yancik, R.; Ries, L.G.; Yates, J.W.;Cancer,1989
3. Comparison of breast carcinomas diagnosed in the 1980s with those diagnosed in the 1940s to 1960s;Joensuu, H.; Toikkanen, S.;BMJ,1991
4. Epidemiology of aging;Haynes, S.G.; Feinleb, M.,1980
5. Sanitat i Seguretat Social de Catalunya. La situaci6 de la salut, dels seus condicionants i dels serveis a Catalunya. Generalitat de Catalunya. Departament de Sanitat i Seguretat Social, Pla de salut de Catalunya 1993-1995;de, Departament,1993