- American Heart Associationhttp://www.heart.org/HEARTORG/
- Family Doctorhttps://familydoctor.org/
- Mayo Clinichttp://www.mayoclinic.org/
- MedicineNethttp://www.medicinenet.com/script/main/hp.asp
- MedlinePlushttps://medlineplus.gov/
- Pleural Mesotheliomahttps://www.pleuralmesothelioma.com/cancer/
- WebMDhttp://www.webmd.com/