Two age peaks in the incidence of chronic fatigue syndrome ...

Additional file 1 – details on survey design and sampling weight. Supplementary Material. Details on the Survey Design . In the screening interview, we asked adult (≥ 18 years) household informants to identify unwell adult household members who displayed at least 1 of 8 CFS defining symptoms (fatigue, cognitive impairment, unrefreshing sleep, muscle pain, joint pain… ................
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