The Medical Birth Registry of Norway; a source for epidemiological and clinical research.
Medical Birth Registry of Norway, University of Bergen, Norway.
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Irgens
D003240:Connective Tissue Diseases / Q000453:epidemiology*; D005260:Female; D006801:Humans; D009664:Norway / Q000453:epidemiology; D011247:Pregnancy; D011248:Pregnancy Complications / Q000453:epidemiology*; D012042:Registries