Translate the following English sentence to French:
"The National Focal Points are under-used and they could make a far greater contribution to the EMCDDA' s work. The role of the scientific committee is still poorly defined and its work is not a central part of the programme."
Il ressort de cette évaluation externe que l' Observatoire souffre d' un manque de coordination et de communication entre ses divers départements ainsi que d' une centralisation excessive des décisions.