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Pregnancy Trimesters

The three approximately equal periods of a normal human PREGNANCY. Each trimester is about three months or 13 to 14 weeks in duration depending on the designation of the first day of gestation.
推出的年份: 1998
副标题
树号: G08.686.707
MeSH 单一 ID: D011264
进入的组:
  • Trimesters, Pregnancy
  • Pregnancy Trimester
  • Trimester, Pregnancy
早前的内容:
  • Gestational Age (1968-1974)
  • Pregnancy (1966-1974)
  • Time Factors (1967-1974)
  • specific trimester (1975-1997)

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