For the system to function optimally, it will probably need to involve some 90 hospitals distributed according to the population of the individual Member States - a level of participation which will, it is hoped, be reached by 1990.
Un fonctionnement optimal du systeme pourrait etre obtenu par la participation de 90 hopitaux, prevus d'ici a 1990, se repartissant suivant la population respective des pays.