24693
Evaluating bone mineral density and vitamin D status in persons with HIV may be important steps in identifying those requiring pharmacotherapy ; however , the appropriate timing for bone mineral density and vitamin D screening is uncertain , as is the appropriate method of replacing vitamin D in HIV - positive patients who are deficient .
 Chemical: vitamin D; Chemical: vitamin D; Chemical: vitamin D
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: vitamin D; Chemical: vitamin D; Chemical: vitamin D