Letter to editor about the articles of "Six-month sequelae of post-vaccination SARS-CoV-2 infection: A retrospective cohort study of 10,024 breakthrough infections"
1 Institute of Public Health, Chung Shan Medical University, Taichung, Taiwan.
2 Institute of Medicine, Chung Shan Medical University, Taichung, Taiwan; Department of Allergy, Immunology & Rheumatology, Chung Shan Medical University Hospital, Taichung, Taiwan; Graduate Institute of Integrated Medicine, China Medical University, Taichung, Taiwan. Electronic address: jccwei@gmail.com.