1. Faculty of Medicine, Universitas Airlangga, Surabaya, Indonesia, Indonesia
2. Department of Anesthesiology and Reanimation, Faculty of Medicine, Universitas Airlangga/Dr. Soetomo General Academic Hospital, Surabaya, Indonesia, Indonesia
3. Department of Anatomy Histology & Pharmacology, Faculty of Medicine, Universitas Airlangga, Indonesia