1. University of Massachusetts at Boston, Department of Physics, Boston, Massachusetts, United States
2. The University of Arizona, Wyant College of Optical Sciences, Tucson, Arizona, United States
3. Massachusetts General Hospital, Harvard Medical School, Boston, Massachusetts, United States
4. Aligarh Muslim University, Jawaharlal Nehru Medical College, Department of Radiotherapy, Aligarh, India
5. Aligarh Muslim University, Jawaharlal Nehru Medical College, Department of Radiodiagnosis, Aligarh, India
6. Aligarh Muslim University, Jawaharlal Nehru Medical College, Department of Pathology, Aligarh, India
7. Aligarh Muslim University, Jawaharlal Nehru Medical College, Department of Otorhinolaryngology (E.N.T.), Aligarh, India
8. University College London, London, England, United Kingdom