FYI: I received a copy of the following study by sending the following to the author.
E-mail: arturo.casadevall@einstein.yu.edu
Arturo Casadevall, MD, PhD Professor, Department of Microbiology & Immunology Professor, Department of Medicine (Infectious Diseases) Leo and Julia Forchheimer Chair in Microbiology & Immunology Chair, Department of Microbiology & Immunology Albert Einstein College of Medicine Jack and Pearl Resnick Campus 1300 Morris Park Avenue Forchheimer Building, Room 411 Bronx, NY 10461
A detailed review of all 2,047 biomedical and life-science research articles indexed by PubMed as retracted on May 3, 2012 revealed that only 21.3% of retractions were attributable to error. In contrast, 67.4% of retractions were attributable to misconduct, including fraud or suspected fraud (43.4%), duplicate publication (14.2%), and plagiarism (9.8%). Incomplete, uninformative or misleading retraction announcements have led to a previous underestimation of the role of fraud in the ongoing retraction epidemic. The percentage of scientific articles retracted because of fraud has increased ~10-fold since 1975. Retractions exhibit distinctive temporal and geographic patterns that may reveal underlying causes.