Elma FEJZIC, et al. “Crosslinks Between Human Leukocyte Antigen DRB1*01 and Human Leukocyte Antigen DRB1*13 Allelic Variants and Occurrence of Rheumatoid Arthritis in Patients From Federation of Bosnia and Herzegovina”. Archives of Rheumatology, vol. 32, no. 4, Dec. 2017, pp. 290-7, doi:10.5606/ArchRheumatol.2017.6258.