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APA Citation
Simmonds, H. A., Fairbanks, L. D., Morris, G. S., Morgan, G., Watson, A. R., Timms, P., & Singh, B. (1987). central nervous system dysfunction and erythrocyte guanosine triphosphate depletion in purine nucleoside phosphorylase deficiency.. Archives of disease in childhood, 62(4), 385–391. http://access.bl.uk/ark:/81055/vdc_100136717420.0x00005a