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APA Citation
Hoffman, I. E. A., Peene, I., Cebecauer, L., Isenberg, D., Huizinga, T. W. J., Union, A., Meheus, L., De Bosschere, K., Hulstaert, F., Veys, E. M., & De Keyser, F. (2005). presence of rheumatoid factor and antibodies to citrullinated peptides in systemic lupus erythematosus. Annals of the rheumatic diseases, 64(2), 330–332. http://access.bl.uk/ark:/81055/vdc_100135164375.0x000062