1. Levels of two other hormones associated with pregnancy—chorionic somatomammotropin and pregnancy-associated glycoprotein—were also far lower than they should have been.
   另外两种与妊娠相关的激素——绒毛膜生长催乳素与妊娠相关糖蛋白的水平也远低于它们应有的水平。

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