The increased use of gestational carriers has expanded family-building opportunities for people and couples unable to carry pregnancies on their own. National American Society of Reproductive Medicine guidelines for gestational carriers have changed over time to reflect advances in reproductive technology and mounting evidence supporting the medical benefits associated with singleton gestations.

中文翻译：

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妊娠携带者周期：2014-2020 年美国胚胎学趋势、国家指南合规性以及由此产生的围产期结局


代孕妈妈的使用增加为无法自行怀孕的人和夫妇提供了更多的家庭建设机会。美国生殖医学协会针对妊娠携带者的指南随着时间的推移而发生变化，以反映生殖技术的进步和越来越多的证据支持与单胎妊娠相关的医疗益处。