Tirta, M. et al. 2023. Birthweight correlates to pubo-femoral distances and α angles in hip ultrasound of newborns at 6 weeks of age: a retrospective cohort study. Acta Orthopaedica. 94, (Dec. 2023), 594–599. DOI:https://doi.org/10.2340/17453674.2023.26188.