1. Institute of Radiation Medicine Fudan University 2094 Xietu Road Shanghai 200032 China
2. Division of Nuclear Medicine and Molecular Imaging Geneva University Hospital Geneva CH‐1211 Switzerland
3. Geneva Neuroscience Center Geneva University Geneva CH‐1205 Switzerland
4. Department of Nuclear Medicine and Molecular Imaging University of Groningen University Medical Center Groningen Groningen Netherlands
5. Department of Nuclear Medicine University of Southern Denmark Odense DK‐500 Denmark