Correction classes
Patchtypography, layout or bibliographyMinorbounded methodological addition without changed conclusionsMajormaterial change to method, evidence or conclusions
Public record
Each correction entry states the date, scope and effect. A material change creates a new linked version or edition. Silent replacement of a released public file is not permitted.
Urgent notices
If reliability, confidentiality or legal risk requires immediate action, the landing page remains available with a withdrawal or review notice while access to the affected file may be suspended.