1. Department of Pulmonology, Erasmus Medical Center Cancer Institute, 3015 CN Rotterdam, The Netherlands
2. Department of Pulmonary Diseases, Amphia Hospital, 4818 CK Breda, The Netherlands
3. Department of Pulmonary Diseases, St. Antonius Hospital, 3435 CM Nieuwegein, The Netherlands
4. Department of Pulmonary Diseases, Máxima Medisch Centrum, 5504 DB Veldhoven, The Netherlands
5. Department of Medical Oncology, National Cancer Institute, 08406 Vilnius, Lithuania
6. Department of Medical Oncology, VITAZ, 9100 Sint-Niklaas, Belgium
7. Nutricia Research, 3584 CT Utrecht, The Netherlands
8. Department of Oncology, Oslo University Hospital, 0379 Oslo, Norway