National Medical Journal of China, , Issue 26,2014, Pages 2001-2003, doi:10.3760/cma.j.issn.0376-2491.2014.26.001
National Medical Journal of China, , Issue 26,2014, Pages 2022-2024, doi:10.3760/cma.j.issn.0376-2491.2014.26.006
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National Medical Journal of China, , Issue 26,2014, Pages 2025-2029, doi:10.3760/cma.j.issn.0376-2491.2014.26.007