16741
As more highly effective and tolerable antiretroviral regimens become available , and as the prevention of mother - to - child transmission becomes an attainable goal in the management of HIV - infected individuals , more and more HIV - positive women are choosing to become pregnant and have children .
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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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