The favorable effects of long-term selenium supplementation on regression of cervical tissues and metabolic profiles of patients with cervical intraepithelial neoplasia: a randomised, double-blind, placebo-controlled trial – Expression of concern

The Editor-in-Chief has been alerted to concerns about the integrity of the above article and is investigating the claims. The concerns have also been referred to the Iranian National Committee for Ethics in Biomedical Research. This statement will be updated when both investigations have been completed and the authors have been given the opportunity to respond to the outcomes of those investigations.