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

Costochondritis
- Medical article from eMedicine.
- http://www.emedicine.com/EMERG/topic116.htm

eMedicine Health - Costochondritis
- Information on the causes, symptoms, and treatment.
- http://www.emedicinehealth.com/articles/5058-1.asp

Costochondritis and Primary Biliary Cirrhosis
- A description of costochondritis, its possible causes, diagnosis and treatments.
- http://pbcers.org/livdis8.htm