Exploring the Relationships Between Depression, Hopelessness, Cognitive Status, Pain, and Spirituality in Patients With Advanced Cancer - Mystakidou, Kyriaki; Tsilika, Eleni; Parpa, Efi; Pathiaki, Maria; Patiraki, Elisabeth; Galanos, Antonis; Vlahos, Lambros (Archives of Psychiatric Nursing, 2007)