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Wheeler DC, Burstyn I, Vermeulen R, Yu K, Shortreed SM, Pronk A, Stewart PA, Colt JS, Baris D, Karagas MR, Schwenn M, Johnson A, Silverman DT, Friesen MC.Wheeler DC, et al. Among authors: friesen mc.Occup Environ Med. 2013 Mar;70(3):203-10. doi: 10.1136/oemed-2012-100918. Epub 2012 Nov 15.Occup Environ Med. 2013.PMID: 23155187Free PMC article.
Pronk A, Stewart PA, Coble JB, Katki HA, Wheeler DC, Colt JS, Baris D, Schwenn M, Karagas MR, Johnson A, Waddell R, Verrill C, Cherala S, Silverman DT, Friesen MC.Pronk A, et al. Among authors: friesen mc.Occup Environ Med. 2012 Oct;69(10):752-8. doi: 10.1136/oemed-2011-100524. Epub 2012 Jul 27.Occup Environ Med. 2012.PMID: 22843440Free PMC article.