Scientific Opinion on the substantiation of a health claim related to cytidine 5-diphosphocholine and maintenance of normal vision pursuant to Article 13(5) of Regulation (EC) No 1924/2006
EFSA Journal 2014;12(2):3575 [11 pp.]. 20 February 2014
http://www.efsa.europa.eu/en/efsajournal/pub/3575.htm
因果関係は確立されていない。