Measuring physical activity-related environmental factors: Reliability and predictive validity of the European environmental questionnaire ALPHA (International Journal of Behavioral Nutrition and Physical Activity, 2010)

(untitled) - Spittaels, H; Verloigne, M; Gidlow, C; Gloanec, J; Titze, S; Foster, C; Oppert, J; Rutter, H; Oja, P; Sjöström, M; De Bourdeaudhuij, I