3551
The aim of the present study was to assess whether lactational exposure to polychlorinated biphenyl - 153 ( PCB - 153 ) , dichlorodiphenyldichloroethylene ( DDE ) , or hexachlorobenzene ( HCB ) as estimated with a physiologically based pharmacokinetic ( PBPK ) model , is associated with decrements in mental and psychomotor development scores of the Bayley Scales of Infant Development ( BSID ) test in children aged around 14 - months of a subsample ( N = 1175 ) of the Spanish INMA birth cohort , and to compare this with the effects of prenatal exposure .
 Chemical: polychlorinated biphenyl - 153; Chemical: PCB - 153; Chemical: dichlorodiphenyldichloroethylene; Chemical: DDE; Chemical: hexachlorobenzene; Chemical: HCB
Please list all entity words in the text that fit the category.Output format is "type1: word1; type2: word2". 
Option: Chemical 
Text: {0} 
Answer:
 Chemical: polychlorinated biphenyl - 153; Chemical: PCB - 153; Chemical: dichlorodiphenyldichloroethylene; Chemical: DDE; Chemical: hexachlorobenzene; Chemical: HCB