title: THE AETIOLOGY OF ACUTE MIDDLE EAR INFECTION.
mesh_terms: D000293:Adolescent; D001431:Bacteriological Techniques; D002648:Child; D004432:Ear, Middle; D005387:Finland; D006193:Haemophilus influenzae; D006801:Humans; D007223:Infant; D009343:Neisseria; D010033:Otitis Media; D011008:Pneumococcal Infections; D011552:Pseudomonas Infections; D013203:Staphylococcal Infections; D013223:Statistics as Topic; D013290:Streptococcal Infections
keywords: ADOLESCENCE; BACTERIOLOGICAL TECHNICS; CHILD; FINLAND; HAEMOPHILUS INFLUENZAE; INFANT; NEISSERIA; OTITIS MEDIA; PNEUMOCOCCAL INFECTIONS; PSEUDOMONAS INFECTIONS; STAPHYLOCOCCAL INFECTIONS; STATISTICS; STREPTOCOCCAL INFECTIONS