Otitis media with effusion prevalence in mountainous/rural and urban environment in Greece Posted on December 8, 2020December 10, 2020 by admin LETTER Hippokratia 2020, 24(1): 47 Tsitiridis I, Skoulakis C, Hajiioannou J Department Otolaryngology – Head and Neck Surgery, University Hospital of Larissa, University of Thessaly, Larissa, Greece