| web | http://www.sfgate.com/cgi-bin/article.cgi?f=/c/a/2011/07/11/BAGG1K737V.DTL |
| author | Brett Israel |
| publication | Environmental Health News |
| date | 2011-07-11 |
| web | Scott Weichenthal, Ryan Kulka | Environ Health Perspect | 2011-06-14 |
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