lda Julita Departement of Anesthesiology and Intensive Therapy Faculty of Medicine, Universitas Sumatera Utara, Medan Indonesia
Bastian Lubis Departement of Anesthesiology and Intensive Therapy Faculty of Medicine, Universitas Sumatera Utara, Medan Indonesia
Chrismas Gideon Bangun Departement of Anesthesiology and Intensive Therapy Faculty of Medicine, Universitas Sumatera Utara, Medan Indonesia