About the Authors

Stephen P. Luby

sluby@icddrb.org

Affiliations International Centre for Diarrhoeal Disease Research, Bangladesh, Dhaka, Bangladesh, Centers for Disease Control and Prevention, Atlanta, Georgia, United States of America

Amal K. Halder

Affiliation International Centre for Diarrhoeal Disease Research, Bangladesh, Dhaka, Bangladesh

Tarique Huda

Affiliation International Centre for Diarrhoeal Disease Research, Bangladesh, Dhaka, Bangladesh

Leanne Unicomb

Affiliation International Centre for Diarrhoeal Disease Research, Bangladesh, Dhaka, Bangladesh

Richard B. Johnston

Affiliation Water and Environmental Sanitation Section, UNICEF Bangladesh, Dhaka, Bangladesh

Competing Interests

SPL received a total of $3.2 million in research funding for 13 research projects on handwashing and household water treatment between 1996 and 2007 from the Procter and Gamble Company, a global manufacturer of soap.

Author Contributions

Conceived and designed the experiments: SPL RBJ. Performed the experiments: AKH TH. Analyzed the data: SPL AKH. Wrote the paper: SPL AKH TH LU RBJ. ICMJE criteria for authorship read and met: SPL AKH TH LU RBJ. Agree with the manuscript's results and conclusions: SPL AKH TH LU RBJ. Wrote the first draft of the paper: SPL.