1. Department of Medical Oncology; Catalan Institute of Oncology, Bellvitge Biomedical Research Institute, L'Hospitalet de Llobregat; Barcelona Spain
2. Cancer Epidemiology Research Program; Catalan Institute of Oncology, Bellvitge Biomedical Research Institute, L'Hospitalet de Llobregat; Barcelona Spain
3. Department of Medicine; University of Barcelona; Barcelona Spain
4. Medical Scientist Training Program; The Ohio State University College of Medicine; Columbus Ohio
5. Department of Medicine; The Ohio State University; Columbus Ohio
6. Department of Otolaryngology; Head and Neck Surgery, Johns Hopkins School of Medicine, Johns Hopkins Outpatient Center; Baltimore Maryland
7. Department of Otolaryngology; Head and Neck Surgery, The Ohio State University; Columbus Ohio
8. Division of Cancer Prevention and Control; Department of Internal Medicine, College of Medicine, The Ohio State University; Columbus Ohio
9. Division of Health Behavior and Health Promotion; College of Public Health, The Ohio State University; Columbus Ohio