Evaluate the collective function of references cited together in a given text segment.
Classify their combined role into one of the following categories: 'method', 'background', or 'result'.

Text:Many recent articles have discussed the findings that support or undermine the autoimmunity hypothesis (Kierszenbaum 1986, 1999, 2003, 2005; Eisen and Kahn 1991; Avila 1992; Fernandez et al. 1992; Kalil and CunhaNeto 1996; Brener and Gazzinelli 1997; Andrade 1999; Soares et al. 2001; Leon and Engman 2001, 2002; Gironés and Fresno 2003; Gironés et al. 2005).
Category: