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Univ Hong Kong, Fac Educ, KM&EL Lab, Pokfulam Rd, Hong Kong, Peoples R China
East China Normal Univ, Dept Educ Informat Technol, Shanghai, Peoples R China Northumbria Univ, Newcastle Business Sch, City Campus East 1, Newcastle Upon Tyne NE1 8ST, Tyne & Wear, England