1. Constitution of the World Health Organization (1948) Geneva: World Health Organization
2. Lauer G (1999) Concepts of quality of life in mental health care. In: Priebe S, Oliver JPJ, Kaiser W, editors. Quality of life and mental health care. Wrightson Biomedical, Philadelphia, pp 19–34
3. Schipper H, Clinch JJ, Olweny CLM (1996) Quality of life studies: definitions and conceptual issues. In: Spilker B, editor. Quality of life and pharmacoeconomics in clinical trials. Lippincott-Raven, Philadelphia, pp. 11–24
4. Calvert MJ, Freemantle N (2003) Use of health-related quality of lif in prescribing research. Part 1: why evaluate health-related quality of life? J Clin Pharm Ther 28:513–521
5. Aydemir N, Ozkara C, Unsal P, Canbeyli R (2011) A comparative study of health related quality of life, psychological well-being, impact of illness and stigma in epilepsy and migraine. Seizure 20:679–685