David G Wilder, Robert D Vining, Katherine A Pohlman, William C Meeker, Ting Xia, James W DeVocht, R Maruti Gudavalli, Cynthia R Long, Edward F Owens, Christine M Goertz
Trials. 2011; 12: 161. Published online 2011 June 28. doi: 10.1186/1745-6215-12-161