Tegnander A, Holen KJ, Terjesen T. The natural history of hip abnormalities detected by ultrasound in clinically normal newborns: A 6–8 year radiographic follow-up study of 93 children. ActaO [Internet]. 1999 Jan. 1 [cited 2026 May 12];70(4):335-7. Available from: https://actaorthop.org/actao/article/view/20413