In the paper by Amrita Rao et al, "Sampling Key Populations for HIV Surveillance: Results from Eight Cross-Sectional Studies using Respondent-Driven Sampling and Venue-Based Snowball Sampling," a mistake was made in the metadata and Duncan Kochelani was included twice, while Brian Rice was not included. Brian Rice was always an intended author of this publication. The authors have records of previous versions that had been reviewed by the editorial team in which Brian is included as an author, as well as the final publishing agreement signed by all authors, with both Duncan and Brian as coauthors of this work. The corrected article will appear in the online version of the paper on the JMIR website on January 15, 2018, together with the publication of this correction notice. Because this was made after submission to PubMed or Pubmed Central and other full-Text repositories, the corrected article also has been re-submitted to those repositories.