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Iorio, A.; De Angelis, F.; Garzoli, A.; Battistini, A.; De Stefano, G. F. (2014). "HLA-DQA1 and HLA-DQB1 genes in Tsachilas Indians from Ecuador: New insights in population analysis by Human Leukocyte Antigens". International Journal of Immunogenetics. 41 (3): 222. doi:10.1111/iji.12116. PMID24775353.