美国马里兰州罗克·维尔市ShadyGrove Fertility中心生殖内分泌学家罗伯特·斯蒂尔曼说：“这比以前报道的年龄要早，流失的比例也更大。”

That's a greater percentage of loss at an earlier age than had previously been reported, "says reproductive endocrinologist Robert Stillman, of Shady Grove Fertility in Rockville, Md."

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