Anatomical study of ultrasound vs landmark guidance for needle placement in the obliquus capitis inferior - Rodriguez-Sanz, Jacobo; Fernandez-de-las-Penas, Cesar; Borrella-Andres, Sergio; Lopez-de-Celis, Carlos; Arias-Buria, Jose L; Perez-Bellmunt, Albert; Albarova-Corral, Isabel; Malo-Urries, Miguel (Scientific Reports, 2025)