The aim of the study was to analyze factors predicting (a) the transition to parenthood for female same-sex couples in Sweden and (b) which partner is the birth mother for the first and (any) second child.

中文翻译：

---

谁在瑞典的女性同性伴侣中生育（第一个）？

该研究的目的是分析预测（a）瑞典女性同性伴侣向父母身份过渡和（b）哪个伴侣是第一个和（任何）第二个孩子的生母的因素。