1 PRACE DOKTORSKIE - Szwecja 606,140 OSTERLUND ANDERS Endemic and epidemic Streptococcus pyogenes strains : an epidemiological, experimental and clinical study with emphasis on intracellular S.pyogenes reservoirs in recurrent pharyngotonsillitis i [doctoral dissertation] / by Anders Osterlund : [Uppsala University]. - Uppsala : Acta Universitatis Upsallensis, 1997. - 45 s. ;