Health-Related Quality of Life in Kidney Transplant Recipients

I have read with interest the paper of Tayyebi et al. (1) and I am impressed by the efforts that the authors made to elaborate the Iranian version of the kidney transplant questionnaire (KTQ-25) and I would like to congratulate the authors for the effect of their work. Renal transplantation is a method that improves both patient survival and quality of life, and is cost-effective in patients with end-stage renal disease compared to dialysis. Among these 3 factors, the quality of life is the most difficult to be estimated. Disease-specific tools designed for the assessment of health-related quality of life are of special value, since they are sensitive to slight, but important changes of the health status (2).