[1] Natl Ctr Global Hlth & Med, Bur Int Med Cooperat, Tokyo, Japan
[2] Toyama Hosp, Natl Ctr Global Hlth & Med, AIDS Clin Ctr, Tokyo, Japan
[3] World Hlth Org, HIV AIDS & STI, Reg Off Western Pacific, Manila, Philippines
[4] Osaka Prefecture Univ, Sch Nursing, Osaka, Japan