TY - JOUR T1 - An Oasys for occupational asthma JF - Canadian Medical Association Journal JO - CMAJ SP - 189 LP - 189-b VL - 169 IS - 3 AU - Jeremy Beach AU - Harold Hoffman Y1 - 2003/08/05 UR - http://www.cmaj.ca/content/169/3/189.3.abstract ER -