Exposure to ultrafine particles while walking or bicycling during COVID-19 closures: A repeated measures study in Copenhagen, Denmark

por Bergmann, M.L., Andersen, Z.J., Amini, H., Ellermann, T., Hertel, O., Lim, Y.H., Loft, S., Mehta, A., Westendorp, R.G., Cole-Hunter, T.
Publicado 2021