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Studies mentioned in video:

1. Changes in brain striatum dopamine and acetylcholine receptors induced by chronic CDP-choline treatment of aging mice: https://www.ncbi.nlm.nih.gov/pmc/articles/PMC1908237/

2. Current knowledge on the neuroprotective and neuroregenerative properties of citicoline in acute ischemic stroke: https://www.ncbi.nlm.nih.gov/pmc/articles/PMC4863531/