No association between residential exposure to petrochemicals and brain tumor risk.

Occupational Health Program and Exposure, Epidemiology, and Risk Program, Department of Environmental Health, Department of Biostatistics, and Department of Epidemiology, Harvard School of Public Health; Pulmonary and Critical Care Unit, Department of Medicine, Massachusetts General Hospital, Harvard Medical School, Boston, Massachusetts; Department of Geography, National Changhua University of Education, Changhua, Taiwan, Republic of China; and School of Public Health, Kaohsiung Medical University, Kaohsiung, Taiwan, Republic of China