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Q39608208-66A465A8-4BA4-4424-91E6-08F1AD747379
Q39608208-66A465A8-4BA4-4424-91E6-08F1AD747379
BestRank
Statement
http://www.wikidata.org/entity/statement/Q39608208-66A465A8-4BA4-4424-91E6-08F1AD747379
Maternal age and preterm births in singleton and twin pregnancies conceived by in vitro fertilisation in the United States.
P2860
Q39608208-66A465A8-4BA4-4424-91E6-08F1AD747379
BestRank
Statement
http://www.wikidata.org/entity/statement/Q39608208-66A465A8-4BA4-4424-91E6-08F1AD747379
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wasDerivedFrom
ddb77dba7f164efb44a8b7f4026d8399cda6aa47
P2860
Rising preterm birth rates, 1989-2004: changing demographics or changing obstetric practice?