[1] Univ Hosp Essen, Dept Venerol, Essen, Germany
[2] ICH Study Ctr, Hamburg, Germany
[3] Praxis Dres Kuhlmann Holm Heiken, Hannover, Germany
[4] Hop St Antoine, Paris, France
[5] Gilead Sci Europe Ltd, Uxbridge, Middx, England
[6] Gilead Sci GmbH, Munich, Germany
[7] Gilead Sci, Paris, France
[8] Gilead Sci Inc, 353 Lakeside Dr, Foster City, CA 94404 USA