| Information | |
|---|---|
| has gloss | eng: The history of chronic fatigue syndrome (CFS, also known by many other names) is thought to date back to the 19th century and before. |
| lexicalization | eng: History of chronic fatigue syndrome |
| instance of | c/Ailments of unknown etiology |
| Media | |
|---|---|
| media:img | Royal Free Hospital.JPG |
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