About the Authors

Madeline Sands

Roles Conceptualization, Formal analysis, Methodology, Writing – original draft, Writing – review & editing

mhsands@email.arizona.edu

Affiliations Department of Infectious Disease, London School of Hygiene and Tropical Medicine, London, United Kingdom, University of Arizona College of Medicine, Tucson, Arizona, United States of America

Robert Aunger

Roles Conceptualization, Formal analysis, Funding acquisition, Writing – review & editing

Affiliation Department of Infectious Disease, London School of Hygiene and Tropical Medicine, London, United Kingdom

Competing Interests

MHS and RA received financial compensation as affiliates of the London School of Hygiene and Tropical Medicine, which served as a paid consultant to GOJO Industries, Inc. for the creation and evaluation of the intervention. GOJO Industries, Inc did not participate in the creation of the questionnaire, in the analysis or interpretation of the data, or in the drafting of the manuscript. This does not alter the authors adherence to PLOS ONE policies on sharing data and materials.