1. Univ. of California, Irvine, CA (United States)
2. Los Alamos National Lab. (LANL), Los Alamos, NM (United States)
3. Argonne National Lab. (ANL), Argonne, IL (United States); University of Illinois, Chicago
4. Univ. of California, Berkeley, CA (United States)
5. Northwestern Univ., Evanston, IL (United States)