Vitamin D Insufficiency/Deficiency in Patients with Recurrent Benign Paroxysmal Positional Vertigo oleh Rudi Pecci, Marco Mandalà, Antonella Marcari, Roberto Bertolai, Paolo Vannucchi, Rossana Santimone, Lisa Bentivegna, Fabio Di Giustino, Arianna Mengucci, Simone Vanni, Federica Pollastri, Beatrice Giannoni