1. The global burden of disease: 2004 update. World Health Organization. 2004.
2. Mental disorders as a major challenge in prevention of work disability: experiences in Finland, Germany, the Netherlands and Sweden. The Social Insurance Institution (KELA). Finland. Social Security and Health Reports 66. 2006.
3. Sjukskrivning—orsaker, konsekvenser och praxis: En systematisk litteraturöversikt. SBU. Statens beredning för medicinsk utvärdering (The Swedish council on technology assessment in health care), Swedish. 2003.
4. Andrén D, Palmer E. Deltidssjukskrivning (Part-time sick leave). Unpublished document. Riksförsäkringsverket (Swedish Social Insurance Board), Swedish. 2004.
5. Andrén D, Andrén T. Starting sick leave on part-time as a treatment method? Örebro University. Swedish Business School (2009). Working Papers 2009:10.