Anatomical study of ultrasound vs landmark guidance for needle placement in the obliquus capitis inferior. - Rodríguez-Sanz, Jacobo; Fernández-de-las-Peñas, César; Borrella-Andrés, Sergio; López-de-Celis, Carlos; Arias-Buría, José L.; Pérez-Bellmunt, Albert; Albarova-Corral, Isabel; Malo-Urriés, Miguel (Scientific Reports, 2025)