He said the text could have been stronger and more comprehensive, but it can still make an important difference.

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Her colleagues and clients say Schaefer serves as an important reminder that people don't need money or power to make a difference.

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Yet it is possible that those "protective" factors, once identified and understood, could play an important role in pointing toward new treatments and interventions that capitalize on those protective factors and so make a real difference to long-term outcomes.

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