The Family Strain Index (FSI). Reliability, validity, and factor structure of a brief questionnaire for families of children with ADHD

Anne W. Riley, Lisa M. Lyman, Georg Spiel, Manfred Döpfner, Maria J. Lorenzo, Stephen J. Ralston, G. Baldursson, D. Coghill, P. Curatolo, S. Dalsgaard, B. Falissard, A. Hervas, M. F. Le Heuzey, T. S. Nøvik, R. R. Pereira, U. Preuss, P. Rasmussen, A. Rothenberger, H. C. Steinhausen, L. Vlasveld