In PLoS Medicine, volume 3, issue 6: DOI:
In the first paragraph of the section The Epidemic of Counterfeit Artesunate in Southeast Asia, the sentence Counterfeit artesunate continues to circulate on a vast scale in mainland Southeast Asia, where between 38 and 52 of artesunate blister packs sampled contain no active ingredient 15 should be Counterfeit artesunate continues to circulate on a vast scale in mainland Southeast Asia, where between 38 and 53 of artesunate blister packs sampled contain no active ingredient 15.