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Having read this survey, it seems to me that they are looking for a few red flags to pop up in someone's answers. Looking for a small group I guess, perhaps only those who have certain cancers in the family, or have had certain cancers themselves?
I am only guessing, but any "general" survey on CFS that does not include insomnia as a symptom is pretty strange.
I am only guessing, but any "general" survey on CFS that does not include insomnia as a symptom is pretty strange.