DISABKIDS Smiley questionnaire: The TAKE 6 assisted health-related quality of life measure for 4 to 7-year-olds

John E. Chaplin^*, Hendrik M. Koopman, Silke Schmidt, Monika Bullinger, Corinna Petersen, Roland Baars, Peter Hoare, Mick Power, Clare Atherton, Marie Claude Simeoni, John Tsanakas, Paraskevi Karagianni, Elpis Hatziagoroy, Athanasios Vidalis, Michael Quittan, Othmar Schuhfried, Nilouparak Hachemian, Ute Thyen, Esther Müller-Godeffroy

^*Corresponding author for this work