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Analgesia nociception index for the assessment of pain in critically ill patients: a diagnostic accuracy study

Ill PatientsPain SyndromeHealth SciencesAcute PainPain MedicineMedicinePostoperative Pain ManagementPatient SafetyDiagnosisSepsisAnalgesia Nociception IndexPreoperative PainPain ManagementAnesthesiaDiagnostic Accuracy StudyAnesthesiologyPain Research