1. The Challenge of Studying Long Covid: An Updated Review;Zimmermann;Clin Infect Dis,2022
2. World Health Organization. a Clinical Case Definition for Post Covid-19 Condition in Children and Adolescents By Expert Consensus. 2023;(February):1-99. https://www.who.int/publications/i/item/WHO-2019-nCoV-Post-COVID-19-condition-CA-Clinical-case-definition-2023-1.
3. National Institute for Health and Care Excellence (NICE) SIGN (SIGN) and RC of GP (RCGP). Covid19 Rapid Guideline: Managing the Longterm Effects of Covid19. Natl Inst Heal Care Excell (NICE), Scottish Intercoll Guidel Netw R Coll Gen Pract. 2022:1-106.
4. Long COVID (post-COVID-19 condition) in children: a modified Delphi process;Stephenson;Arch Dis Child,2022
5. Long COVID: major findings, mechanisms and recommendations;Davis;Nat Rev Microbiol,2023