References
- Holzberg M. Nail signs of systemic disease. Atlas of hair and nails., MK Hodinsky, ME Sawaya, RK Scher. Churchill Livingstone, PhiladelphiaPA 2002; 59
- Lennard L. The clinical pharmacology of 6-mercaptopurine. Eur J Clin Pharmacol. 1992; 43: 329–39
- Badalamenti S, Kerdel AF. Azathioprine. Comprehensive dermatologic drug therapy., SE Wolverton. WB Saunders Co, PhiladelphiaPA 2001; 165–79