This isn't PubMed-listed so some might have missed it:
Njoku, M.G., Jason, L.A., & DiPasquale, L. (2008).
Family illnesses among people with ME/CFS: Blood versus non-blood relatives. The Journal of IiME, 2, 4-11. Retrieved from
http://www.investinme.org/Documents/Journals/Journal of IiME Vol 2 Issue 2.pdf
[I don't know what happened to this thread - it was here]
Njoku, M.G., Jason, L.A., & DiPasquale, L. (2008).
Family illnesses among people with ME/CFS: Blood versus non-blood relatives. The Journal of IiME, 2, 4-11. Retrieved from
http://www.investinme.org/Documents/Journals/Journal of IiME Vol 2 Issue 2.pdf
[I don't know what happened to this thread - it was here]