PT - JOURNAL ARTICLE AU - FREEDMAN, M TI - Amyotrophic lateral sclerosis and occupational exposure to 2,4-dichlorophenoxyacetic acid AID - 10.1136/oem.58.9.609a DP - 2001 Sep 01 TA - Occupational and Environmental Medicine PG - 609--610 VI - 58 IP - 9 4099 - http://oem.bmj.com/content/58/9/609.2.short 4100 - http://oem.bmj.com/content/58/9/609.2.full SO - Occup Environ Med2001 Sep 01; 58