经阴道超声对早期异位妊娠的鉴别诊断价值研究. 环球医学研究, [S. l.], v. 3, n. 5, p. 70–74, 2026. DOI: 10.62836/medicine.v3i5.1483. Disponível em: https://cn.sgsci.org/medicine/article/view/1483.. Acesso em: 5 11月. 2026.