#politique-de-sante/circulaire-interministerielle-dhos-o1-ddsc-bsis-no-2007-457-du-31-decembre-2007-relative-a-la-necessite-d-etablir-une-mise-en-coherence-des-schemas-departementaux-d-analyse-et-de-couverture-des-risques-sdacr-et-des-schemas-regionaux-d-organisation