Research papers are usually evaluated via peer review. However, peer review has limitations in evaluating research papers. In this paper, Scienstein and the new idea of ‘collaborative document evaluation’ are presented. Scienstein is a project to evaluate scientific papers collaboratively based on ratings, links, annotations and classifications by the scientific community using the internet. In...

Percutaneous tracheostomy is a routine procedure in intensive care units. In cases of very low position of the larynx, cervical spine deformation, morbid obesity, or neck tumor, performance of the classic tracheostomy is inapplicable. Retrosternal approach to tracheostomy in such 20 patients is herein reported. After preoperative neck computerized tomography to define the neck anatomy, a small ...

INTRODUCTION AND OBJECTIVES Conservative renal surgery is based on the nephron-sparing principle. Renal arterial vascularization is of terminal type and the occlusion of an artery generates the necrosis of the corresponding region. The aim of this research is to analyze the anatomic particularities of the renal vascular system as they are highlighted in the course of standard and robotic surger...