Motion management in a patient with tracheostomy during lung stereotactic body radiation therapy: breath hold is worth a try - Kästner, Lena; Abo-Madyan, Yasser; Huber, Lena; Spaniol, Manon; Siebenlist, Kerstin; Sacks, Marie-Kristin; Ehmann, Michael; Stieler, Florian; Clausen, Sven; Lohr, Frank; Fleckenstein, Jens; Boda-Heggemann, Judit (Advances in radiation oncology, 2022)