The BMJ Group wishes to inform readers that a series of technical errors resulted in the unjustified retraction of the article "Myalgic encephalomyelitis: a review with emphasis on key findings in biomedical research". The article's citation details remain as originally published (J Clin Pathol 2007; 60: 466 - 471; doi:10.1136/jcp.2006.042408).

The Journal of Clinical Pathology offers an unreserved apology to the author of the article, Professor Malcolm Hooper, and regrets any confusion or distress that may have been caused.