<qa>  What is the ICC criteria for probable and possible DLB?- Subjects must be adults between 55 to 90 years of age with an established diagnosis for dementia in accordance with DSM-IV criteria and have to fulfil at least one of the following: The ICC criteria for probable and possible DLB, the National Institute of Neurological and Communicative Disorders and Stroke and Alzheimer Disease and Related Disorders Association NINCDS-ADRDA for Alzheimers Disease AD, or the National Institute of Neurological and Communicative Disorders and Association Internationale Pour la Recherche et lEnseignement en Neurosciences NINCS-AIREN for Vascular Dementia VaD. 