Personal exposure to traffic-related air pollutants and relationships with respiratory symptoms and oxidative stress: A pilot cross-sectional study among urban green space workers., Guilbert, Ariane, De Cremer Koen, Heene Billie, Demoury Claire, Aerts Raf, Declerck Priscilla, Brasseur Olivier, and Van Nieuwenhuyse An , Sci Total Environ, 2019 Feb 01, Volume 649, (2019)