Subject
U.S. Gov't; PedPal Lit; Extramural Research Support; N.I.H.; Non-U.S. Gov't Research Support; Abdominal Neoplasms/complications Abdominal Pain/etiology/prevention & control Analgesics; Dissociative/administration & dosage Child; Opioid/administration & dosage Anesthetics; P.H.S. Terminal Care/methods Treatment Outcome; Preschool Drug Administration Schedule Drug Combinations Drug Tolerance Female Humans Ketamine/administration & dosage Neuroblastoma/complications Palliative Care/methods Research Support