Andrea Valentino Surgery Departement, Neurosurgery Division, Faculty of Medicine Riau University, Arifin Achmad General Hospital Riau Province, Pekanbaru Indonesia
Wan Novriza Wijaya Anesthesiology and Intensive Therapy Specialist Education Program, Faculty of Medicine Riau University, Pekanbaru Indonesia
Novita Anggraeni Department of Anesthesiology and Intensive Therapy, Faculty of Medicine Riau University, Arifin Achmad General Hospital Riau Province, Pekanbaru Indonesia
Sony Sony Department of Anesthesiology and Intensive Therapy, Faculty of Medicine Riau University, Arifin Achmad General Hospital Riau Province, Pekanbaru Indonesia
