Stressed children.
D000222:Adaptation, Physiological / Q000187:drug effects*; D000777:Anesthetics / Q000009:adverse effects*; D005283:Fentanyl / Q000009:adverse effects / Q000031:analogs & derivatives*; D006801:Humans; D007223:Infant; D011300:Preoperative Care; D017409:Sufentanil
D000777:Anesthetics; D017409:Sufentanil; D005283:Fentanyl