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Lombardi, Francesco FL; Taricco, Mariangela; De Tanti, Antonio; Telaro, Elena; Liberati, Alessandro (2002-04-22). „Sensory stimulation for brain injured individuals in coma or vegetative state”. Cochrane Database of Systematic Reviews (2): CD001427. ISSN1465-1858. PMID12076410. doi:10.1002/14651858.cd001427.