[1] Ono Pharmaceut Co Ltd, Minase Res Inst, Osaka 6188585, Japan
[2] Ono Pharmaceut Co Ltd, Tsukuba Res Inst, Ibaraki 300424, Japan
[3] Ono Pharmaceut Co Ltd, Fukui Res Inst, Fukui 9138538, Japan
[4] Ono Pharmaceut Co Ltd, Osaka 5410056, Japan
[5] Kumamoto Univ, Sch Med, Dept Internal Med 2, Kumamoto 8600811, Japan
[6] NCI, Expt Retrovirol Sect, HIV & AIDS Malignancy Branch, NIH, Bethesda, MD 20892 USA