1 International Research Centre for the Advancement of Health Communication, Hong Kong Polytechnic University, Hong Kong. Electronic address: margo.turnbull@polyu.edu.hk.
2 International Research Centre for the Advancement of Health Communication, Hong Kong Polytechnic University, Hong Kong.
3 Department of English, Hong Kong Polytechnic University, Hong Kong.
4 Department of Applied Social Sciences, Hong Kong Polytechnic University, Hong Kong.