Forced bachelors, migration and HIV transmission risk in the context of China's gender imbalance: a meta-analysis. HIV testing and syphilis testing were both positively correlated with sex tourism in univariate analysis crude odds ratio cOR 1. This small size limited our ability to conduct additional sub-analyses. BMC Public Health 18, International mobility, sexual behaviour and HIV-related characteristics of men who have sex with men residing in Belgium. Sexually transmitted infections and HIV among travellers: a review. Public Health Agency of Canada
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