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Baltadzhiev I, Popivanova N, Zaprianov Z. Malignant forms of Mediterranean spotted fever: risk factors for fatal outcomes. Braz J Infect Dis. 2016;20:511-512.","DOI":"10.1016\/j.bjid.2016.06.002"},{"key":"17","doi-asserted-by":"crossref","unstructured":"17. \u00c1lvarez-L\u00f3pez DI, Ochoa-Mora E, Nichols Heitman K, et al. Epidemiology and clinical features of Rocky Mountain spotted fever from enhanced surveillance, Sonora, Mexico: 2015\u20132018. Am J Trop Med Hyg. 2021;104:190-197.","DOI":"10.4269\/ajtmh.20-0854"},{"key":"18","doi-asserted-by":"crossref","unstructured":"18. Regan JJ, Traeger MS, Humpherys D, et al. Risk factors for fatal outcome from Rocky Mountain spotted fever in a highly endemic area-Arizona, 2002\u20132011. Clin Infect Dis. 2015;60:1659-1666.","DOI":"10.1093\/cid\/civ116"},{"key":"19","doi-asserted-by":"crossref","unstructured":"19. Pugliese G, Liccardi A, Graziadio C, et al. 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