Retraction of papers authored by Yuhji Saitoh – Beyond the Fujii phenomenon

Background and Aims: Various aspects of retracted articles authored by Yoshitaka Fujii and their retraction notices have been examined. Yuhji Saitoh has coauthored many articles with Yoshitaka Fujii which were subsequently retracted. Japanese Society of Anesthesiology (JSA) recommends retraction of various articles by Yuhji Saitoh, but various attributes of those and their retraction notices have not been examined. Methods: A list of retracted articles was retrieved from PubMed, Retraction Watch Database and relevant journals. Their retraction notices were obtained from the journal's webpage. Predefined characteristics of the retracted articles and their retraction notices were evaluated against those proposed by Committee on Publication Ethics (COPE). Results: Fifteen such articles were retracted. Two of them were not identified as retracted in the journal webpage. Half of the papers mentioned by JSA are yet to be retracted. Among those retracted, only 13.3% retraction notices were in line with the guidelines published by the COPE. Two retracted articles are yet to be flagged as retracted in PubMed. The median (interquartile range) time required for retraction from the date of declaration of being eligible for retraction is 14 (3) months. Data were analysed with Microsoft Excel™ (2007). Conclusion: Even after more than 1 year of recommendation, many articles containing evidence of scientific misconduct are yet to be retracted. Among those retracted, the relevant authority failed to follow the prevalent and well-regarded standards of ethics in scholarly publication.