- Correspondence to: Pamela M Ling MD MPH ,Box 0320, University of California, San Francisco, CA 94143-0320, USA;
- Received June 24, 2004
- Accepted December 16, 2004
- First published March 24, 2005.
There is an error in reference number 68 of this article. The correct reference should read:
Brown and Willamson. (1980). No Title. Bates No. 544000497/544000504. http://legacy.library.ucsf.edu/tid/mgh10f00.
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