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Sigma Pharmaceuticals Chairman John Stocker Announces Resignation 6/21/2010 8:21:17 AM SMH -- Sigma Pharmaceuticals Ltd chairman John Stocker has joined chief executive Elmo de Alwis in resigning from the company following this year's poor results.

Sigma Pharmaceuticals Chairman John Stocker Announces Resignation
6/21/2010 8:21:17 AM

SMH -- Sigma Pharmaceuticals Ltd chairman John Stocker has joined chief executive Elmo de Alwis in resigning from the company following this year's poor results.