Ambient air pollution in relation to diabetes and glucose-homoeostasis markers in China: a cross-sectional study with findings from the 33 Communities Chinese Health Study Autor Bo-Yi Yang, PhD, Zhengmin (Min) Qian, ProfPhD, Shanshan Li, PhD, Gongbo Chen, MPH, Michael S Bloom, PhD, Michael Elliott, PhD, Kevin W Syberg, PhD, Joachim Heinrich, ProfPhD, Iana Markevych, PhD, Si-Quan Wang, MD, Da Chen, ProfPhD, Huimin Ma, PhD, Duo-Hong Chen, PhD, Yimin Liu, ProfPhD, Mika Komppula, PhD, Ari Leskinen, PhD, Kang-Kang Liu, PhD, Xiao-Wen Zeng, PhD, Li-Wen Hu, PhD, Yuming Guo, PhD, Guang-Hui Dong, ProfPhD