c1 Refereed Journal Article, Dr Peng Shi signed VUIR pt.16/10/11. 16/12/11 RD. YELLOW in Sherpa; author can archive pre-print and can archive post-print with restrictions: 12 month embargo for STM, Behavioural Science and Public Health Journals and 18 month embargo for SSH Journals. Author cannot archive publisher's version/PDF. 30/5/12 HD.