Correcting for the influence of sampling conditions on biomarkers of exposure to phenols and phthalates: a 2-step standardization method based on regression residuals.
Mortamais M, Chevrier C, Philippat C, Petit C, Calafat AM, Ye X, Silva MJ, Brambilla C, Eijkemans MJ, Charles MA, et al. Environ Health. 2012 Apr 26; 11:29. Epub 2012 Apr 26.