22814
Umbilical cord serum concentrations of Zn and Se were measured and Neonatal Behavioral Neurological Assessment ( NBNA ) tests were conducted .
 Chemical: Zn; Chemical: Se
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: Zn; Chemical: Se