Time trends of process and impact indicators in Italian mammography screening programmes--1996-2004.

Giordano L, Giorgi D, Piccini P, Ventura L, Stefanini V, Senore C, Paci E, Segnan N.

Epidemiol Prev 2007; 31: 21-32.

http://www.ncbi.nlm.nih.gov/pubmed/17824360