22134
OBJECTIVES : This study aimed to assess the roles of both genetic and non - genetic factors such as sex and non - shared environmental conditions that may mediate differential behavioral responses to lithium .
 Chemical: lithium
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: lithium