1. Faculty of Medicine, Shahid Beheshti University of Medical Sciences, Tehran, Iran
2. Bone & Joint Reconstruction Research Center, Shafa Yahyaeian Orthopedics Hospital, Iran University of Medical Science, Tehran, Iran
3. Department of Pathology, Milad Hospital, Tehran, Iran
4. Department of Pathology, Sina Hospital, Tehran University of Medical Sciences, Tehran, Iran
5. Department of Pathology, Loghman Hakim Hospital, Shahid Beheshti University of Medical Sciences, Tehran, Iran
6. Department of Pathology, Taleghani Hospital, Shahid Beheshti University of Medical Sciences, Tehran, Iran