title: A national register for erythropoietic protoporphyria.
mesh_terms: D004920:Erythropoiesis; D006402:Hematologic Diseases / Q000453:epidemiology*; D006801:Humans; D011164:Porphyrias / Q000453:epidemiology*; D011524:Protoporphyrins / Q000097:blood; D012042:Registries; D006113:United Kingdom
chemical_list: D011524:Protoporphyrins