Sonja Mensch

69 Design and content validity Veugelers, R., Calis, E. A., Penning, C., Verhagen, A., Bernsen, R., Bouquet, J., Benninga, M. A., Merkus, P. J., Arets, H. G., Tibboel, D., & Evenhuis, H. M. (2005). A population-based nested case control study on recurrent pneumonias in children with severe generalized cerebral palsy: Ethical considerations of the design and representativeness of the study sample. BMC Pediatrics, 5 , 25. World Health Organization. (2008). International Classification of Functioning, Disability and Health for Children and Youth. Geneva: WHO.