Title: Depressive symptoms are associated with objectively measured sleep parameters in kidney transplant recipients

1 Inst. of Behavioural Sciences, Semmelweis University, Budapest, Hungary, 2 Inst. of Epidemiology and Social Medicine, University of Muenster, Muenster, Germany 3 John van Geest Centre for Brain Repair, Department of Clinical Neurosciences University of Cambridge, Cambridge, United Kingdom 4 Inst. of Pathophysiology, Semmelweis University, Budapest, Hungary 5 Dept. of Medicine, Division of Nephrology, University Health Network, University of Toronto, Toronto, Canada 6 Dept. of General Psychology, Pázmány Péter Catholic University, Budapest, Hungary 7 Division of Nephrology, Department of Medicine, University of Tennessee Health Science Center, TN, USA 8 Dept. Transplantation and Surgery, Semmelweis University, Budapest, Hungary 9 Centre for Mental Health, University Health Network and Department of Psychiatry, University of Toronto, Toronto, Canada