1. Department of Pulmonary Diseases University Medical Center Groningen, University of Groningen Groningen the Netherlands
2. Ariadne Labs Brigham and Women’s Hospital, Harvard T. H. Chan School of Public Health Boston Massachusetts
3. Department of Medicine Brigham and Women’s Hospital Boston Massachusetts
4. Department of Psychosocial Oncology and Palliative Care Dana‐Farber Cancer Institute Boston Massachusetts
5. Department of General Practice and Elderly Medicine University Medical Center Groningen, University of Groningen Groningen the Netherlands
6. American Cancer Society Inc Washington DC