Estimation of Background Serum 2,3,7,8-TCDD Concentrations By Using Quantile Regression in the UMDES and NHANES Populations

Chen, Qixuan; Garabrant, David H.; Hedgeman, Elizabeth; More

Epidemiology . 21(4):S51-S57, July 2010.

Estimating Population Distributions When Some Data Are Below a Limit of Detection by Using a Reverse Kaplan-Meier Estimator

Gillespie, Brenda W.; Chen, Qixuan; Reichert, Heidi; More

Epidemiology . 21(4):S64-S70, July 2010.