Asthma Exposure

Housing Conditions

1997 - 2007
2007 - 2009

Animals

1991 - Present
1997 - 2007
2009 - Present

Other notable exposures

1991 - 2003
2010 - Present
June 2010

Asthmatic reactions

1995
1995 - 2003
2003 - 2007
2007 - 2009
2009 - Present
02/15/2012