title: Systolic time interval in infants and children with primary hypothyroidism.
mesh_terms: D000293:Adolescent; D002648:Child; D002675:Child, Preschool; D006801:Humans; D007037:Hypothyroidism / Q000503:physiopathology*; D007223:Infant; D009200:Myocardial Contraction; D013599:Systole