Screening for depression in chronic haemodialysis patients as a part of care in dialysis setting: a cross-sectional study by Kubanek, A, Renke, M, Godlewska, BR, Paul, P, Przybylak, M, Kowalska, AS, Wąż, P, Błaszczyk, M, Macul-Sanewska, A, Rutkowski, P, Czarnacka, K, Bednarski, K, Grabowski, J