Exposure to air pollution and scarlet fever resurgence in China: a six-year surveillance study oleh Yonghong Liu, Hui Ding, Shu-ting Chang, Ran Lu, Hui Zhong, Na Zhao, Tzu-Hsuan Lin, Yiming Bao, Liwei Yap, Weijia Xu, Minyi Wang, Yuan Li, Shuwen Qin, Yu Zhao, Xingyi Geng, Supen Wang, Enfu Chen, Zhi Yu, Ta-Chien Chan, Shelan Liu