BOADLE, Roisin; WIGFIELD, Emma; DULAY, Amanjit. P1_7 Foetal Ultrasound Imaging Safety in Early Pregnancy. Physics Special Topics, [S. l.], v. 8, n. 1, 2009. Disponível em: https://journals.le.ac.uk/index.php/pst/article/view/2289. Acesso em: 16 feb. 2025.