Fig. 6From: Influence of urban air pollution on the population in the Klang Valley, Malaysia: a spatial approachSpatial estimated proportion among adult population (people) of chronic bronchitis disease at four districts in the Klang Valley: Klang district represented Klang DOE monitoring station, Petaling district (Shah Alam and Petaling Jaya stations), Kuala Lumpur district (Cheras station) and Hulu Langat district (Kajang station) from 2000 to 2009. Note Gombak and Sepang districts are not includedBack to article page