1. Anderson LH, Martinson BC, Crain AL, Pronk NP, Whitebird RR, O'Connor PJ, Fine LJ (2005) Health care charges associated with physical inactivity, overweight, and obesity. Prev Chronic Dis 2(4):A09
2. BenDebba M, Heller J, Ducker T, Eisinger J (2002) Cervical spine outcomes questionnaire: its development and psychometric properties. Spine (Phila Pa 1976) 27(19):2116–2123
3. Bertakis KD, Azari R (2006) The influence of obesity, alcohol abuse, and smoking on utilization of health care services. Fam Med 38(6):427–434
4. Borsch-Supan A, Brugiavini A (eds) (2005) The Survey of Health, Ageing and Retirement in Europe—methodology. Mannheim Research Institute for the Economics of Ageing, Mannheim
5. Borsch-Supan A, Brandt M, Hunkler C, Kneip T, Korbmacher J, Malter F, Schaan B, Stuck S, Zuber S (2013) Data Resource Profile: the Survey of Health, Ageing and Retirement in Europe (SHARE). Int J Epidemiol 42(4):992–1001