Co-corresponding author: Liang Cao Xiang Hu, The First Affiliated Hospital of Dalian Medical University 15 October 2014 Liang Cao and Xiang Hu are listed as Co-corresponding author Competing interests No competing interests
Co-corresponding author: Liang Cao
15 October 2014
Liang Cao and Xiang Hu are listed as Co-corresponding authorCompeting interests
No competing interests