Image-guided interstitial high-dose-rate brachytherapy in the treatment of metastatic esophageal squamous cell carcinoma - Omari, Jazan; Heinze, Constanze; Wilck, Antje; Hass, Peter; Seidensticker, Max; Damm, Robert; Fischbach, Katharina; Ricke, Jens; Pech, Maciej; Powerski, Maciej (Journal of Contemporary Brachytherapy, 2018)