1. Department of Radiology and Nuclear Medicine, Sultan Qaboos Comprehensive Cancer Care and Research Center, Al-Khoud, Muscat 123, Oman
2. Department of Nuclear Medicine, Groote Schuur Hospital, University of Cape Town, Cape Town 7935, South Africa
3. Department of Radiology and Nuclear Medicine, Sultan Qaboos University Hospital, Al-Khoud, Muscat 123, Oman
4. Department of Obstetrics and Gynecology, Armed Forces Hospital, Al-Khoud, Muscat 123, Oman
5. Department of Nuclear Medicine, National Hospital, Abuja 90001, Nigeria
6. Department of Radiology and Imaging Sciences, Emory University, Atlanta, GA 30322, USA