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Bertsias, G., A. Raptopoulou, E. Coutala, M. Mamoulaki, H. Kritikos, P. Sidiropoulos, and DT Boumpas. Expression of Programmed Death (PD)-1 and PD-1 Ligands (PD-L1, PD-L2) in Peripheral Blood Mononuclear Cells of Patients With Systemic Lupus Erythematosus. BioMed Central, 2005.

Bertsias, G., et al. Expression of Programmed Death (PD)-1 and PD-1 Ligands (PD-L1, PD-L2) in Peripheral Blood Mononuclear Cells of Patients With Systemic Lupus Erythematosus. BioMed Central, 2005.