Plut, Domen, et al. “Diagnostic Accuracy of Haemophilia Early Arthropathy Detection With Ultrasound (HEAD-US): A Comparative Magnetic Resonance Imaging (MRI) Study”. Radiology and Oncology, vol. 53, no. 2, June 2019, pp. 178-86, https://www.radioloncol.com/index.php/ro/article/view/3235.