title: A case of conditioned fear in a two-year-old boy after tonsillectomy.
mesh_terms: D000367:Age Factors; D002673:Child, Hospitalized; D002675:Child, Preschool; D005239:Fear; D006801:Humans; D008297:Male; D010698:Phobic Disorders / Q000209:etiology*; D011183:Postoperative Complications; D014068:Tonsillectomy