" 
 ::::Since read that previous merger, thanks for pointing it out though. Just because something is proposed once is no reason for it not to be proposed again fyi, but I have not reverted the removal of the merge tags since you are willing to discuss on the talk page. I feel that the NCI Thesaurus is probably the source we should be following, and also that we should try to avoid the heavy use of primary sources here. Are these primary studies cited by any secondary sources? There is specific mention in the policy of not using primary sources to overrule a secondary source, and it seems to me that that might be what has happened here. See also Wikipedia_talk:WikiProject_Medicine#Vitamin_U.   "