Air pollution and increased number of psychiatric emergency room visits : A case-crossover study for identifying susceptible groups
Background: Ambient particulate matter is a leading risk factor for disease globally. Particulate matter 10 (PM10) and particulate matter 2.5 (PM2.5) are derived from different sources, including operating motor vehicles as well as from industrial activities. In this study we investigate the association between increased concentrations of PM and total daily visits to the psychiatric emergency unit