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Dyfyniad Arddull ChicagoOvretveit, John. Evaluating Health Interventions: An Introduction to Evaluation of Health Treatments, Services, Policies and Organizational Interventions. First edition. Philadelphia: Open University Press, 1998.
Dyfyniad MLAOvretveit, John. Evaluating Health Interventions: An Introduction to Evaluation of Health Treatments, Services, Policies and Organizational Interventions. First edition. Open University Press, 1998.
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