Clinical research, like all science, is self-correcting, with errors detected by the scientific community and communicated to the publishing journals, which then relay the information (and its resolution) to its readers. If this relaying process fails, science grinds to a halt. In this study we are testing its integrity.

This prospective study documents the outcome of notification to journal editorial boards (or equivalent authorities) of factually incorrect or inconsistent claims, in reports they have published.

Inclusion Criteria:

• Report of a clinical trial in humans of treatment of heart disease with bone marrow derived stem cells
• Report containing discrepancy by reference to same report or another report

Exclusion Criteria:

• Discrepancy has already been corrected by an erratum