pid type title authors mentors source_title published_date url doi isbn issn eissn ffzg:5939 "journal article" "Psychometric Properties of the Pittsburgh Sleep Quality Index (PSQI) in Patients with Multiple Sclerosis: Factor Structure, Reliability, Correlates, and Discrimination" "Jerković, Ana; Mikac, Una; Matijaca, Meri; Košta, Vana; Ćurković Katić, Ana; Dolić, Krešimir; Vujović, Igor; Šoda, Joško; Đogaš, Zoran; Pavelin, Sanda; Rogić Vidaković, Maja"