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

http://www.cdc.gov/DiseasesConditions/

http://www.cdc.gov/

http://www.medicinenet.com/diseases_and_conditions/article.htm

http://www.mda.org/disease/

http://www.wrongdiagnosis.com/diseasecenter.htm

http://dir.yahoo.com/Health/Diseases_and_Conditions/

http://www.answers.com/topic/disease

http://www.answers.com/topic/diseases

http://kidney.niddk.nih.gov/index.htm

http://digestive.niddk.nih.gov/

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

http://www.who.int/ctd

http://www.health.state.ny.us/diseases/

http://www.wrongdiagnosis.com/disease/mitochondrial.htm

http://www.gicare.com/Diseases/diseaseinner.aspx

http://www.rarediseases.org/

http://rarediseases.about.com/

http://www.genome.gov/27531964

http://www.americanheart.org/presenter.jhtml?identifier=1200002