1. Department of Surgery sub Neurosurgery , Faculty of Medicine, , Universitas Nusa Cendana, East Nusa Tenggara 85111 , Indonesia
2. RSUD WZ Johannes Kupang , Faculty of Medicine, , Universitas Nusa Cendana, East Nusa Tenggara 85111 , Indonesia
3. Department of Paediatrics , Faculty of Medicine, , Universitas Nusa Cendana, East Nusa Tenggara 85111 , Indonesia
4. Department of Cardiology , Faculty of Medicine, , Universitas Nusa Cendana, East Nusa Tenggara 85111 , Indonesia
5. Neurosurgery Division , Department of Surgery, Faculty of Medicine, , Denpasar, Bali 80113 , Indonesia
6. Universitas Udayana, Prof. Dr. I.G.N.G. Ngoerah General Hospital , Department of Surgery, Faculty of Medicine, , Denpasar, Bali 80113 , Indonesia