20064
Higher levels of serum 25 - hydroxyvitamin D predicted decreases in trabecular network heterogeneity .
 Chemical: 25 - hydroxyvitamin D
Given options, please tell me the categories of all the listed entity words.Output format is "type1: word1; type2: word2". 
Option: Chemical 
Text: {0} 
 Entities: 25 - hydroxyvitamin D 
Answer:
 Chemical: 25 - hydroxyvitamin D