title: Methodological approach for substantiating disease freedom in a heterogeneous small population. Application to ovine scrapie, a disease with a strong genetic susceptibility.
authors.affiliation: Unité d'Epidémiologie animale, UR346, INRA, F63122 St Genès Champanelle, France. marie-Jose.Martinez@Iut2.Upmf-Grenoble.Fr
authors.forename: Marie-José
authors.initials: MJ
authors.lastname: Martinez
authors.forename: Benoit
authors.initials: B
authors.lastname: Durand
authors.forename: Didier
authors.initials: D
authors.lastname: Calavas
authors.forename: Christian
authors.initials: C
authors.lastname: Ducrot