A - C
Air pollutants are associated with adverse respiratory effects mainly in susceptible groups. This study was designed to assess the impact of the ionic composition of particulate matter on asthmatic respiratory functions in São Paulo city. http://www.sciencedirect.com/science?_ob=ArticleURL&_udi=B6VH3-4MMFVYD-5&_user=2429682&_rdoc=1&_fmt=&_orig=search&_sort=d&view=c&_acct=C000057245&_version=1&_urlVersion=0&_userid=2429682&md5=6c6f8823dd38c87d80c65b438e89557c
ARW/SJC