Children's preparatory behavior for elective surgery.
D000342:Affective Symptoms / Q000523:psychology; D002648:Child; D002673:Child, Hospitalized / Q000523:psychology*; D002675:Child, Preschool; D006801:Humans; D008016:Life Change Events; D010988:Play and Playthings; D012381:Role Playing; D013315:Stress, Psychological / Q000523:psychology; D013514:Surgical Procedures, Operative / Q000523:psychology*