1. University of Iowa Hospitals and Clinics, USA
2. Department of Nuclear Medicine, SGPGIMS, India
3. Neuroradiology Department, University of Iowa Hospitals and Clinics, USA
4. Department of Neuro Imaging and Interventional Radiology, NIMHANS, India
5. PET Imaging Center, University of Iowa Hospitals and Clinics, USA
6. Division of Nuclear Medicine, University of Iowa Hospitals and Clinics, USA