File:Cancer smoking lung cancer correlation from NIH.png

La bildo estas kopiita de wikipedia:en. La originala priskribo estas:

From the National Cancer Institute. 

{| border="1" ! date/time || username || edit summary
 * 08:42, 27 October 2005 || |
 * 03:53, 25 March 2005 || |
 * 03:52, 25 March 2005 || |
 * 01:54, 22 January 2005 || |
 * 22:48, 31 August 2004 || |
 * 22:48, 31 August 2004 || |}
 * 22:48, 31 August 2004 || |}

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