| http://www.w3.org/ns/prov#value | - The Chinese Public Security Office estimated that there are 4 to 6 million sex workers nationwide in 2000, an increase of 160-fold in number compared with 1985.1 During this period, the annual cases of 8 reportable sexually transmitted diseases (STDs, including syphilis and HIV/AIDS) increased by 147-fold from 5838 to 859,040.2 The skyrocketing STD epidemic is becoming an increasingly important pu
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