Respondent sequence number
Two-year MEC weights of subsample C
Dimethylphosphate Comment Code
Diethylphosphate Comment Code
Dimethylthiophosphate Comment Code
Diethylthiophosphate Comment Code
Dimethyldithiophosphate Comment Code
Diethyldithiophosphate Comment Code
Creatinine, urine (mg/dL)