title: [Polycardiographic evaluation of left-ventricular contraction periods in children with pneumonia].
mesh_terms: D000293:Adolescent; D002648:Child; D002675:Child, Preschool; D004562:Electrocardiography; D006352:Heart Ventricles / Q000503:physiopathology; D006801:Humans; D009200:Myocardial Contraction; D011014:Pneumonia / Q000503:physiopathology*
vernacular_title: Ocena polikardiograficzna podokresów skurczu lewej komory serca u dzieci chorych na zapalenie płuc.