Costochondritis and Primary Biliary Cirrhosis 
A description of costochondritis, its possible causes, diagnosis and treatments.
http://pbcers.org/livdis8.htmeMedicine Health - Costochondritis
Information on the causes, symptoms, and treatment.
http://www.emedicinehealth.com/articles/5058-1.asp
Costochondritis
Medical article from eMedicine.
http://www.emedicine.com/EMERG/topic116.htm
MedicineNet: Costochondritis and Tietze Syndrome
Doctor written consumer health information on the characteristics and treatment of these conditions.
http://www.medicinenet.com/costochondritis_and_tietze_syndrome/article.htm
