RT Journal T1 Unreported research funding in: Exhaled carbon monoxide with waterpipe use in us students JF JAMA JO JAMA YR 2008 FD May 14 VO 299 IS 18 SP 2150 OP 2150 DO 10.1001/jama.299.18.2150-b UL http://dx.doi.org/10.1001/jama.299.18.2150-b AB Unreported Research Funding: In the Research Letter titled “Exhaled Carbon Monoxide With Waterpipe Use in US Students,” published in the January 2, 2008, issue of JAMA (2008;299[1]:36-38), the Financial Disclosures should have included the following: Dr Hammond reports that she has received research funding for studies on environmental tobacco smoke from the National Institutes of Health and from the Flight Attendants Medical Research Institute. However, none of these grants were used to support the study reported in this Research Letter.