Al-Delaimy WK, Natarajan L, Sun X, Rock CL, and Pierce JJ for the Women’s Healthy Eating and Living (WHEL) Study Group. Reliability of plasma carotenoid biomarkers and its relation to study power. Epidemiology. 2008;19:338–344.
The middle initial of the last author is incorrect. The correct name is:
Friesen MC, Davies HW, Teschke K, Ostry AS, Hertzman C, Demers PA. Impact of the specificity of the exposure metric on exposure-response relationships. Epidemiology. 2007;18:88–94.
In the legends for Figures 2 and 3, “tetrachlorophenol” should be “pentachlorophenol.”