The climate change mitigation effects of daily active travel in cities by Brand, C, Dons, E, Anaya-Boig, E, Avila-Palencia, I, Clark, A, de Nazelle, A, Gascon, M, Gaupp-Berghausen, M, Gerike, R, Götschi, T, Iacorossi, F, Kahlmeier, S, Laeremans, M, Nieuwenhuijsen, MJ, Pablo Orjuela, J, Racioppi, F, Raser, E, Rojas-Rueda, D, Standaert, A, Stigell, E, Sulikova, S, Wegener, S, Int Panis, L