ІГНАТЕНКО, Є. Early echographic criteria of risk of premature births are at multiple pregnancy. Perinatology and reproductology: from research to practice, Kyiv, Ukraine, v. 5, n. 2-2, p. 7–12, 2025. Disponível em: http://par.org.ua/index.php/par/article/view/329. Acesso em: 5 oct. 2025.