[1] Kings Coll Hosp London, London, England
[2] Brigham & Womens Hosp, Boston, MA 02115 USA
[3] Univ Alabama, Tuscaloosa, AL 35487 USA
[4] Columbia Univ, New York, NY USA
[5] Int Med Ctr Japan, Tokyo, Japan
[6] Dominican Inst Virol Studies, Santo Domingo, Japan
[7] Clin Med Actuel Montreal, Montreal, Dominican Rep
[8] Hosp Civil Guadalajara, Guadalajara, Jalisco, Mexico
[9] Gilead Sci Inc, Foster City, Mexico