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Sobus JR, Waidyanatha S, McClean MD, Herrick RF, Smith TJ, Garshick E, Laden F, Hart JE, Zheng Y, Rappaport SM.Sobus JR, et al. Among authors: mcclean md.Occup Environ Med. 2009 Feb;66(2):99-104. doi: 10.1136/oem.2008.041418. Epub 2008 Nov 18.Occup Environ Med. 2009.PMID: 19017700Free PMC article.