The impact of black carbon (BC) on mode-specific galvanic skin response (GSR) as a measure of stress in urban environments by Yang, X, Orjuela, JP, McCoy, E, Vich, G, Anaya-Boig, E, Avila-Palencia, I, Brand, C, Carrasco-Turigas, G, Dons, E, Gerike, R, Göetschi, T, Nieuwenhuijsen, M, Panis, LI, Standaert, A, de Nazelle, A