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APA Citation
Massardo, L., Jacobelli, S., Rodríguez, L., Rivero, S., González, A., & Marchetti, R. (1990). weak association between HLA-DR4 and rheumatoid arthritis in Chilean patients.. Annals of the rheumatic diseases, 49(5), 290–292. http://access.bl.uk/ark:/81055/vdc_100144704948.0x000057