1. Institute for Health and Environment Issues/IGO, Schijf, The Netherlands, Nursing and Reactivation Center Antonius IJsselmonde, Rotterdam, The Netherlands.
2. Erasmus MC-Daniel den Hoed Cancer Center, Rotterdam, The Netherlands.
3. Helen Dowling Institute, Utrecht, The Netherlands.
4. Nursing Center Swinhove, Zwijndrecht, The Netherlands Albert Schweitzer Hospital 'Amstelwijck', Dordrecht, The Netherlands.
5. University of Tilburg, The Netherlands, Institute for Health and Environment Issues, Schijf, The Netherlands.