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The Human Phenotype Ontology (HPO) is downloaded weekly from The file downloaded is considered the "last stable build" available for the ontology. For more about the HPO, view their website at

Term:Premature birth
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Accession:HP:0001622 term browser browse the term
Definition:The birth of a baby of less than 37 weeks of gestational age.
Synonyms:exact_synonym: Premature delivery;   Premature delivery of affected infants;   Preterm birth;   Preterm delivery;   Shortened gestation time
 xref: EFO:0003917;   MESH:D047928;   SNOMEDCT_US:282020008;   SNOMEDCT_US:367494004;   SNOMEDCT_US:49550006;   UMLS:C0151526;   UMLS:C0233315

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