Ihyan Amri1, Abdul Hafid Bajamal2,*, David S. Perdanakusuma3
1Doctoral Program of Medical Science, Faculty of Medicine, Universitas Airlangga, Surabaya, INDONESIA.
2Departement of Neurosurgery, Faculty of Medicine, Universitas Airlangga, Surabaya, INDONESIA.
3Departement of Plastic Surgery, Faculty of Medicine, Universitas Airlangga, Surabaya, INDONESIA.