title: Will the science and technology gap between China and USA becomes narrower, wider, or stay in the same in 50 years' time?
authors.affiliation: Department of Imaging and Interventional Radiology, Faculty of Medicine, The Chinese University of Hong Kong, Prince of Wales Hospital, Shatin, Hong Kong SAR, China.
authors.forename: Yì Xiáng J
authors.initials: YX
authors.lastname: Wáng