title: [Infectious mononucleosis - 1980].
mesh_terms: D000368:Aged; D006801:Humans; D007244:Infectious Mononucleosis / Q000453:epidemiology* / Q000401:mortality; D008875:Middle Aged; D011044:Poland; D012621:Seasons
vernacular_title: Mononukleoza zakaźna - 1980 rok.