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Cavun S, Savci V (October 2004). „CDP-choline increases plasma ACTH and potentiates the stimulated release of GH, TSH and LH: the cholinergic involvement”. Fundamental & Clinical Pharmacology18 (5): 513–23. DOI:10.1111/j.1472-8206.2004.00272.x. PMID15482372.