May-June 2017 Reviewer of the Issue - Nikolaos Grivas Nikolaos Grivas June 2017 Dr Nikolaos Grivas graduated from Medical School in University of Ioannina and in 2013 he finished his PhD study at the same University. He completed his urology training in G.Hatzikosta General Hospital of Ioannina. Very recently he finished his fellowship in the Urology Department of Netherlands Cancer Institute, NKI-Avl in Amsterdam. He stayed 1 year in this center of excellence where he was trained in the robotic urological surgery. The last 3 years he is an associate member of European Association of Urology (EAU) guidelines panel of Urolithiasis. He has received 5 awards in three European congresses and in 2016 he received the Best Young Urologist Award in Greece. He has 30 publications in peer-reviewed journals while he is a reviewer in 16 urological journals. He belongs also in the editorial board of 8 urological journals. He has also received Scholarships from Greek Urological Association and European Association of Urology. Finally he has 40 oral presentations and invited speeches in many international conferences. The peer review process is a fundamental process for improving the scientific literature and it also allows the reviewers to improve themselves and to have a critical view also on theirs way of scientific writing. In order to be a good reviewer a lot of time and extremely detailed work is needed which sometimes is difficult especially if the review topic is outside of your field of expertise. However it is a great honor and I always feel satisfaction when I see my comments to be included in a manuscript since you feel like a co-author in some way. This Best Reviewer awards gives me the strength to try to improve myself and continue doing a review in as high professional way as possible.