1670
We identified demographic determinants of circulating 25 - OHD in a large cohort of minority children , and now extend our studies to examine potential roles of vitamin D binding protein ( DBP ) as a determinant of 25 - OHD levels .
 Chemical: 25 - OHD; Chemical: vitamin D; Chemical: 25 - OHD
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: 25 - OHD; Chemical: vitamin D; Chemical: 25 - OHD