1. Department of Clinical Nutrition Therapy, Helsinki University Hospital, Helsinki, Finland;
2. Department of Oncology, University of Helsinki and Helsinki University Hospital, Helsinki, Finland;
3. Children's Hospital, University of Helsinki and Helsinki University Hospital, Helsinki, Finland;
4. Laboratório de Nutrição e Unidade de Nutrição e Metabolismo, Instituto de Medicina Molecular, Faculdade de Medicina da Universidade de Lisboa, Hospital Universitário de Santa Maria, Lisbon, Portugal;
5. Institute of Public Health and Clinical Nutrition, School of Medicine, University of Eastern Finland, Kuopio, Finland;
6. Institute of Clinical Medicine, Internal Medicine, Kuopio University Hospital, Kuopio, Finland;
7. Division of Ear, Nose and Throat Diseases, Department of Clinical Sciences, Intervention and Technology, Karolinska Institutet, Karolinska University Hospital, Stockholm, Sweden;
8. Department of Otorhinolaryngology – Head & Neck Surgery, University of Helsinki and Helsinki University Hospital, Helsinki, Finland