(untitled) - Kriemler, S; Zahner, L; Schindler, C; Meyer, U; Hartmann, T; Hebestreit, H; Brunner-La Rocca, H P; van Mechelen, W; Puder, J J (Effect of school based physical activity programme (KISS) on fitness and adiposity in primary schoolchildren: cluster randomised controlled trialBMJ, 2010)