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Not new, but an important epidemiological paper: Onset Patterns and Course of Myalgic Encephalomyelitis/Chronic Fatigue Syndrome (Chu et al., 2019) https://www.ncbi.nlm.nih.gov/pmc/articles/PMC6370741/ Lily Chu, Ian J. Valencia, Donn W. Garvert, and Jose G. Montoya Excerpt: