Lähteet:
1. "immunosuppressantteja", on väärän diagnoosin (online) - http: //www.wrongdiagnosis.com/treat/immunosuppressive_drugs.htm
2. "Mitä immunosuppressantteja?", on wiseGEEK (online) - https://www.wisegeek.com/what-are-immunosuppressive -drugs.htm
3.
Urology - "Munuaisensiirtorekisteristä", on Virginian yliopiston Health System (online) - https://www.healthsystem.virginia.edu/uvahealth/adult_urology/trans.cfm
4. "Azathioprine Index", Annette O. Gbemudu, PharmD, MBA; muokannut Jay W. Marks, MD, on MedicineNet.com - https://www.medicinenet.com/azathioprine/article.htm