Letter to the Editor: Plausible explanations for neurocognitive deficits in ME/CFS, aggravation of neurocognitive impairment induced by exertion. Author(s) Twisk FN, Arnoldus RJ, Maes M Institution Zonnedauw 15, 1906 HB Limmen, The Netherlands. Source Psychol Med 2010 Apr 12.:1-2. Language ENG Pub Type(s) JOURNAL ARTICLE PubMed ID 20380780 [if: Another Twisk publication. I'd like to read it when copy-right makes it available. So far this is all I can get (0 at pubmed). Cambridge Univ Press publishes the journal.