http://chronicfatigue.about.com/od/whatischronicfatigue/a/what_is_CFS.htm

http://en.wikipedia.org/wiki/Chronic_fatigue_syndrome

http://chronicfatigue.about.com/od/whatischronicfatigue/a/understandCFS.htm

http://www.cdc.gov/cfs/

http://www.cfs-review.blogspot.com/

http://ajp.psychiatryonline.org/cgi/content/full/160/2/221

http://www.ncbi.nlm.nih.gov/pubmed/12562565

http://www.sleepydust.net/CHRONIC-FATIGUE-SYNDROME-AND-TREATMENT-main-cfs-books.html

http://www.nlm.nih.gov/medlineplus/ency/article/001244.htm

http://www.chronicfatiguesolution.com/scientific-review1.htm