Nanopublications LDF server

Nanopublications

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Matches in Nanopublications for { ?s ?p "[Patients with preexisting systemic lupus erythematosus have increased maternal serum-free beta-hCG levels in the first-trimester.]. Sentence from MEDLINE/PubMed, a database of the U.S. National Library of Medicine."@en ?g. }

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