Lung-Chang Chien (Environmental and Occupational Health) co-authored and published a paper, "Association of Organic Solvents and Occupational Noise on Hearing Loss and Tinnitus among Adults in the U.S., 1999–2004" in the International Archives of Occupational and Environmental Health. This study examined the association of organic solvents with hearing loss and tinnitus, and assessed the interaction of organic solvent and occupational noise exposure on hearing loss and tinnitus. The organic solvents include 1,4-dichlorobenzene, benzene, ethylbenzene, styrene, toluene, o-xylene, and m-/p-xylene. This paper discloses significant relationships of high-frequency hearing loss with benzene, ethylbenzene, and toluene, while no significant interaction was observed. In particular, tinnitus was also unrelated to organic solvent exposure.