Clinically Silent Small Vessel Disease of the Brain in Patients with Obstructive Sleep Apnea Hypopnea Syndrome oleh Dimitrios G. Raptis, Olga Sinani, Georgia G. Rapti, Aikaterini Papanikolaou, Katerina Dadouli, Panagiotis Ntellas, Eftychia Z. Kapsalaki, Foteini Malli, Konstantinos I. Gourgoulianis, Georgia Xiromerisiou