1. Department of Nuclear Medicine, Taleghani Hospital, School of Medicine, Shahid Beheshti University of Medical Sciences, Tehran, Iran
2. Department of Nuclear Medicine, Shohada Tajrish Hospital, School of Medicine, Shahid Beheshti University of Medical Sciences, Tehran, Iran
3. Department of Nuclear Medicine, Shariati Hospital, School of Medicine, Tehran University of Medical Sciences, Tehran, Iran
4. Depertment of Nuclear Medicine, Imam Hossein Hospital, School of Medicine, Shahid Beheshti University of Medical Sciences, Tehran, Iran