Zhang, Harrison G, Jacqueline P Honerlaw, Monika Maripuri, Malarkodi Jebathilagam Samayamuthu, Brendin R Beaulieu-Jones, Huma S Baig, Sehi L’Yi, et al. 2023. “Potential Pitfalls in the Use of Real-World Data for Studying Long COVID.”. Nature Medicine 29 (5): 1040-43.