4048
In contrast , comparisons of older Icelandic fracture women with age - matched controls showed that hip fracture was associated with a global cortical bone deficit , including both the superior cortical margin and the load - bearing inferior cortex .
 None
Please list all entity words in the text that fit the category. Output format is "word1, word2". 
Option: Chemical 
Text: {0} 
Answer:
 None