PRACE DOKTORSKIE - SZWECJA 552,653 ROSÉN CHRISTER Effect of pneumococcal vaccination on opsonization of pneumococci, nasopharyngeal carriege of bacteria and incidence of acute otitis media : [doctoral dissertation] / by Christer Rosén ; Dept, of Oto-rhino--laryngology, University Hospital, Lund, Sweden. -Lund ! [Lund University], 1984. - 113, [3] s. : wykr. ; 24 cm