Benefits of early tracheostomy in ventilated stroke patients?: current evidence and study protocol of the randomized pilot trial SETPOINT (Stroke-related Early Tracheostomy vs. Prolonged Orotracheal Intubation in Neurocritical care Trial) - Bösel, Julian; Schiller, Petra; Hacke, Werner; Steiner, Thorsten (International journal of stroke, 2012)