A fact from Real ear measurement appeared on Wikipedia's Main Page in the Did you know column on 1 January 2016 (check views). The text of the entry was as follows:
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I don't know any more, but the doi link is definitely broken. You are right that it does not seem to be an editor error at Wikipedia, it is more likely upstream of us. It might be AJA have published the wrong doi or have not registered it properly, or it might be a fault at doi.org. I have used the fault form to report the error. In my opinion, dois are more trouble than they are worth. SpinningSpark08:29, 7 November 2015 (UTC)[reply]