作者单位:Imperial Coll London, Med Res Council Ctr Global Infect Dis Anal, Dept Infect Dis Epidemiol, London[1]Natl AIDS Control Council, Nairobi, Kenya[2]London Sch Hyg & Trop Med, Dept Global Hlth & Dev, London, England[3]Minist Hlth, Div Noncommunicable Dis, Nairobi, Kenya[4]