1. Library of Information Center, Zhejiang Technical Institute of Economics, Hangzhou, China
2. Department of Health Technology and Informatics, The Hong Kong Polytechnic University, Hong Kong, SAR, China
3. School of Science, Computing and Engineering Technologies, Swinburne University of Technology, Melbourne, VIC, Australia
4. College of Computing, Georgia Institute of Technology, Atlanta, GA, USA
5. School of Computer Science and Engineering, University of New South Wales, Sydney, NSW, Australia