In the October 2011 issue, the article entitled “Brazilians lured back home with research funding and stability” (Nat. Med. 17, 1173, 2011) incorrectly spelled Fabricio Costa's last name as Castro in two instances. The error has been corrected in the HTML and PDF versions of the article.

In the October 2011 issue, the article entitled “Businesses ready whole-genome analysis services for researchers” (Nat. Med. 17, 1161, 2011) stated that the researchers spent nine months analyzing the data when, in fact, they spent only one month doing so. Additionally, the data were sent to Mark Yandell of the University of Utah, who applied the VAAST algorithm, rather than to Omicia directly. The error has been corrected in the HTML and PDF versions of the article.