Time series study of relationship between ambient PM2.5 and outpatient visits for respiratory diseases in Foshan City, 2017
GUAN Qi-hua，LIANG Zi-mian，MO Ying-ying
S China J Prev Med . 2018, (5): 406 -410 .  DOI: 10.13217/j.scjpm.2018.0406

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