TY - JOUR TI - Hopelessness and perceived stress: the mediating role of cognitive flexibility and intolerance of uncertainty AU - Demirtas, A.S. AU - Yildiz, B. JO - Dusunen Adam Journal of Psychiatry and Neurological Sciences PY - 2019 VL - 32 SP - 259 EP - 267 DO - 10.14744/DAJPNS.2019.00035 ER -