[1] Bill & Melinda Gates Fdn, Integrated Hlth Solut Dev, Global Hlth Program, Seattle, WA 98102 USA
[2] CSM Med Univ, Clin Epidemiol Unit, Lucknow, Uttar Pradesh, India
[3] CSM Med Univ, Dept Pediat, Lucknow, Uttar Pradesh, India
[4] CSM Med Univ, Dept Social & Prevent Med, Lucknow, Uttar Pradesh, India
[5] Henry Ford Hlth Syst, Vattikuti Urol Inst, Detroit, MI USA