[1] Univ Med Ctr Gottingen, Dept Palliat Med, Gottingen, Germany
[2] Univ Gottingen, D-37073 Gottingen, Germany
[3] Univ Canc Ctr Leipzig, Leipzig, Germany
[4] Univ Hosp Leipzig, Dept Med Psychol & Med Sociol, Leipzig, Germany
[5] Heidelberg Univ, Thoraxklin, Heidelberg, Germany
[6] Univ Hosp Wurzburg, Interdisciplinary Dept Palliat Med, Wurzburg, Germany
[7] Univ Med Ctr Gottingen, Dept Oral & Maxillofacial Surg, Gottingen, Germany
[8] Univ Med Ctr Gottingen, Dept Ear Nose & Throat Surg, Gottingen, Germany
[9] Univ Med Ctr Gottingen, Dept Radiotherapy & Radiat Oncol, Gottingen, Germany