1. Faculty of Medicine, Universitas Airlangga, Surabaya, Indonesia
2. Faculty of Medicine, Universitas Sebelas Maret, Surakarta, Indonesia
3. Department of Orthopedic and Traumatology, Dr R. Soeharso Orthopedic Hospital, Surakarta, Indonesia
4. Department of Orthopedic and Traumatology, Faculty of Medicine, Universitas Airlangga/ Dr. Soetomo General Academic Hospital, Surabaya, Indonesia
5. Faculty of Medicine, Universitas Muhammadiyah Surakarta, Indonesia