PT - JOURNAL ARTICLE AU - I C Mills TI - Environmental epidemiology study methods and application AID - 10.1136/oem.2009.046573 DP - 2009 Nov 01 TA - Occupational and Environmental Medicine PG - 784--784 VI - 66 IP - 11 4099 - http://oem.bmj.com/content/66/11/784.short 4100 - http://oem.bmj.com/content/66/11/784.full SO - Occup Environ Med2009 Nov 01; 66