import { NamedNode } from 'rdf-js';
declare const _default: {
    EvidenceLevelA: NamedNode<"http://schema.org/EvidenceLevelA">;
    EvidenceLevelB: NamedNode<"http://schema.org/EvidenceLevelB">;
    EvidenceLevelC: NamedNode<"http://schema.org/EvidenceLevelC">;
};
export default _default;
export declare type MedicalEvidenceLevel = NamedNode<'http://schema.org/EvidenceLevelA'> | NamedNode<'http://schema.org/EvidenceLevelB'> | NamedNode<'http://schema.org/EvidenceLevelC'>;
