[1] Univ Florida, Gainesville, FL USA
[2] Scripps Clin, La Jolla, CA 92037 USA
[3] Univ Hepatitis Ctr Bach & Godofsky, Bradenton, FL USA
[4] Fdn Invest Diego, Santurce, PR USA
[5] Univ Colorado, Hlth Sci Ctr, Denver, CO USA
[6] Univ N Carolina, Chapel Hill, NC USA
[7] Dallas Methodist Hosp, Liver Inst, Dallas, TX USA
[8] Brooke Army Med Ctr, Ft Sam Houston, TX 78234 USA
[9] Kaiser Permanente, San Diego, CA USA
[10] Virginia Commonwealth Univ, Med Ctr, Richmond, VA 23284 USA