 A response to Chigwedere's work by AIDS denialists led by Peter Duesberg was initially published by the non-peer-reviewed journal "Medical Hypotheses" followed by a retraction because of poor quality of data, undeclared conflicts of interest, and potential effects on global health.This has ignited a reappraisal of the peer review system for serious scientific journals.Chigwedere worked as a physician in Zimbabwe, a viral immunologist and health policy analyst at the Harvard AIDS Initiative, and a management consultant at McKinsey & Company.