Stefania Marzinotto, Francesca Sessa, Alessandra Franzoni,“KRAS Codons 12 and 13 Mutation Analysis: A Comparative Study between Direct Sequencing and a New Sensitive Real-Time PCR Assay,” Sequencing, vol. 2011, Article ID 895709, 7 pages, 2011. doi:10.1155/2011/895709