2946
These results suggested that ELD or ALF used in combination with ALN has therapeutic advantages over ALN monotherapy , with ELD + ALN combination treatment producing an especially beneficial anti - osteoporotic effect by inhibiting osteoclastic bone resorption and maintaining osteoblastic function , compared with ALF + ALN combination treatment .
 ELD, ALF, ALN, ALN, ELD, ALN, ALF, ALN
Please list all entity words in the text that fit the category. Output format is "word1, word2". 
Option: Chemical 
Text: {0} 
Answer:
 ELD, ALF, ALN, ALN, ELD, ALN, ALF, ALN