2907
Whereas the beneficial effects of intermittent treatment with parathyroid hormone ( PTH ) ( intact PTH 1 - 84 or fragment PTH 1 - 34 , teriparatide ) on vertebral strength is well documented , treatment may not be equally effective in the peripheral skeleton .
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Please list all entity words in the text that fit the category.Output format is "type1: word1; type2: word2". 
Option: Chemical 
Text: {0} 
Answer:
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