24690
The causes of low bone mineral density , osteoporosis , and fractures in persons with HIV are likely multifactorial , involving traditional risk factors , HIV infection , and exposure to antiretroviral treatment .
 None
Please list all entity words in the text that fit the category.Output format is "type1: word1; type2: word2". 
Option: Chemical 
Text: {0} 
Answer:
 None