CHEUNG, H. H.; TONG, L.-Y.; TO, W. W. Second-tier non-invasive prenatal screening for Down syndrome in a public obstetric unit: the first 12 months. Hong Kong Journal of Gynaecology, Obstetrics and Midwifery, [S. l.], v. 22, n. 1, 2023. DOI: 10.12809/hkjgom.22.1.02. Disponível em: https://hkjgom.org/home/article/view/307. Acesso em: 19 may. 2024.