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Observational research with adolescents: a framework for the management of the parental permission

Miguel Ruiz-Canela*, Cristina Lopez-del Burgo, Silvia Carlos, Maria Calatrava, Carlos Beltramo, Alfonso Osorio and Jokin de Irala

BMC Medical Ethics 2013, 14:2 doi:10.1186/1472-6939-14-2

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