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. Author manuscript; available in PMC: 2013 Feb 24.
Published in final edited form as: Lancet. 2011 Jun 27;378(9788):319–327. doi: 10.1016/S0140-6736(11)60895-7

Figure 1.

Figure 1

Figure 1

(A): Enrollment, Randomization, and Follow-up of Study Participants. (B): Rate of enrollment over time. Indicated is the point at which approval was granted to change the lower age for eligibility of enrollment from 16 years to 3 years.