Potential pitfalls in the use of real-world data for studying long COVID

Affiliations

• ¹ Department of Biomedical Informatics, Harvard Medical School, Boston, MA, USA.
• ² Massachusetts Veterans Epidemiology Research and Information Center (MAVERIC), VA Boston Healthcare System, Boston, MA, USA.
• ³ Division of Rheumatology, Inflammation, and Immunity, Brigham and Women's Hospital, Boston, MA, USA.
• ⁴ Department of Biomedical Informatics, University of Pittsburgh, Pittsburgh, PA, USA.
• ⁵ Department of Surgery, Beth Israel Deaconess Medical Center, Boston, MA, USA.
• ⁶ Department of Medicine, National University Hospital, Singapore, Singapore, Singapore.
• ⁷ Office of Research and Development, US Department of Veterans Affairs, Washington DC, USA.
• ⁸ Department of Neurology, University of Pittsburgh, Pittsburgh, PA, USA.
• ⁹ Department of Biomedical Informatics, Harvard Medical School, Boston, MA, USA. gbrat@bidmc.harvard.edu.