There are errors in the Funding and Competing Interests statements. The correct statements are:

Funding: This survey was funded by Médecins Sans Frontières (MSF)—Operational Centre Brussels. MSF provided support in the form of salaries for NC, ES, LO, EFK, and GVC. The specific roles of these authors are articulated in the ‘author contributions’ section. The funder financially supported data collection, study procedures, and study coordination, and was involved with study design, data collection, and analysis, but otherwise had no role in decision to publish or preparation of the manuscript.

Competing Interests: The authors have read the journal’s policy and have the following competing interests to declare: MSF provided support in the form of salaries for NC, ES, LO, EFK, and GVC. This does not alter our adherence to PLOS ONE policies on sharing data and materials. There are no patents, products in development, or marketed products associated with this research to declare.