1. Department of Otorhinolaryngology, Head and Neck Surgery, Erasmus University Medical Center, Rotterdam, the Netherlands
2. Department of Epidemiology, Erasmus University Medical Center, Rotterdam, the Netherlands
3. Department of Radiology and Nuclear Medicine, Erasmus University Medical Center, Rotterdam, the Netherlands
4. Department of Otolaryngology-Head & Neck Surgery and Epidemiology, Johns Hopkins School of Medicine and Bloomberg School of Public Health, Baltimore, MD 21205, USA
5. Department of Internal Medicine, Erasmus University Medical Center, Rotterdam, the Netherlands