Affiliation: | 1.Department of Epidemiology, Erasmus University Medical Center, PO Box 2040, 3000 CA, Rotterdam, The Netherlands ;2.Department of Respiratory Medicine, Ghent University Hospital, Ghent, Belgium ;3.Department of Otorhinolaryngology, Erasmus University Medical Center, Rotterdam, The Netherlands ;4.Department of Neurology, Erasmus University Medical Center, Rotterdam, The Netherlands ;5.Department of Ophthalmology, Erasmus University Medical Center, Rotterdam, The Netherlands ;6.Department of Gastroenterology, Erasmus University Medical Center, Rotterdam, The Netherlands ;7.Department of Internal Medicine, Erasmus University Medical Center, Rotterdam, The Netherlands ;8.Department of Dermatology, Erasmus University Medical Center, Rotterdam, The Netherlands ;9.Department of Radiology and Nuclear Medicine, Erasmus University Medical Center, Rotterdam, The Netherlands ; |