Fig. 1From: Where chloroquine still works: the genetic make-up and susceptibility of Plasmodium vivax to chloroquine plus primaquine in BhutanMap of the study sites. Circles depict the 12 sentinel sites at which enrolment was conducted over the full duration of the study (old Site). Squares depict the additional 23 sites from which enrolment was started eight months into the study (new Site)Back to article page