12031
A systematic review was conducted to explore two kinds of associations , one was between the workers exposed to PCP with lymphoma and hematopoietic neoplasm , the other was between childhood lymphoma and leukemia with their parents exposed to PCP .
 Chemical: PCP; Chemical: PCP
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: PCP; Chemical: PCP