Journal of Clinical Medicine and Research 2141-2235 Academic Journals 10.5897/JCMR2014.0253 Lijie Han Huifang Zhao Qingsong Yin Lin Chen Yongping Song Xudong Wei * E-mail: xudongwei@zzu.edu.cn 2015 30 04 2015 08 07 2014 17 04 2015 7 2 7 10 This is an open-access article distributed under the terms of the Creative Commons Attribution License 4.0, which permits unrestricted use, distribution, and reproduction in any medium, provided the original author and source are credited. This article is available from http://politicalwaffle.uk/journal/JCMR/article-abstract/AA29A7453113 The full text article is available as a PDF file from http://politicalwaffle.uk/journal/JCMR/article-full-text-pdf/AA29A7453113 1 2 3 4 5 6 7 8 9 10