Evan E. Bolton, Yanli Wang, Paul A. Thiessen, Stephen H. Bryant (2008). „Chapter 12 PubChem: Integrated Platform of Small Molecules and Biological Activities”. Annual Reports in Computational Chemistry4: 217-241. DOI:10.1016/S1574-1400(08)00012-1.
Konstantopoulou M, Belgi A, Griffiths K, Seale J, Macfarlane A (2005). „Azathioprine-induced pancytopenia in a patient with pompholyx and deficiency of erythrocyte thiopurine methyltransferase”. BMJ330 (7487): 350–1. DOI:10.1136/bmj.330.7487.350. PMID15705694.
Konstantopoulou M, Belgi A, Griffiths K, Seale J, Macfarlane A (2005). „Azathioprine-induced pancytopenia in a patient with pompholyx and deficiency of erythrocyte thiopurine methyltransferase”. BMJ330 (7487): 350–1. DOI:10.1136/bmj.330.7487.350. PMID15705694.
Woodroffe R, Yao G, Meads C, Bayliss S, Ready A, Raftery J, Taylor R (2005). „Clinical and cost-effectiveness of newer immunosuppressive regimens in renal transplantation: a systematic review and modelling study”. Health Technol Assess9 (21): 1–194. PMID15899149.