Comparison of the percutaneous dilatational tracheostomy with and without flexible bronchoscopy guidance in intensive care units. - Öner, Özlem; Dağlı, Sinem; Gürkok, Mehmet Çağatay; Öztürk, Ejder Kamil; Ergan, Begüm; Hancı, Volkan; Gökmen, Ali Necati; Yaka, Erdem (BMC Anesthesiology, 2025)