TY - JOUR T1 - Increase in asthma: a more toxic environment or a more susceptible population? JF - Thorax JO - Thorax SP - 171 LP - 174 DO - 10.1136/thx.49.2.171 VL - 49 IS - 2 AU - A Seaton AU - D J Godden AU - K Brown Y1 - 1994/02/01 UR - http://thorax.bmj.com/content/49/2/171.abstract N2 - 300 Multiple ChoicesThis is a pdf-only article and there is no markup to show you.full-text.pdf ER -