1. School of Computer Science and Technology; Nanjing Normal University; Nanjing Jiangsu 210023 China
2. Jiangsu Key Laboratory of 3D Printing Equipment and Manufacturing; Nanjing Jiangsu 210042 China
3. Translational Imaging Division & MRI Unit; Columbia University and New York State Psychiatric Institute; New York NY 10032 USA
4. School of Natural Sciences and Mathematics; Shepherd University; Shepherdstown WV 25443 USA