HIV-related risk behaviours and the correlates among rickshaw pullers of Kamrangirchar, Dhaka, Bangladesh: a cross-sectional study using probability sampling by Ravari Shahrzad, Zamani Saman, Ono-Kihara Masako, Hoque Md Hafiz, Kihara Masahiro

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Sexual behavior and awareness of Chinese university students in transition with implied risk of sexually transmitted diseases and HIV infection: A cross-sectional study by Ma Qiaoqin, Ono-Kihara Masako, Cong Liming, Xu Guozhang, Zamani Saman, Ravari Shahrzad, Kihara Masahiro

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Needle and syringe sharing practices of injecting drug users participating in an outreach HIV prevention program in Tehran, Iran: A cross-sectional study by Kihara Masahiro, Ono-Kihara Masako, Zamani Saman, Nassirimanesh Bijan, Vazirian Mohsen, Mortazavi Ravari Shahrzad, Gouya Mohammad

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Early initiation of sexual activity: a risk factor for sexually transmitted diseases, HIV infection, and unwanted pregnancy among university students in China by Ravari Shahrzad, Zamani Saman, Pan Xiaohong, Xu Guozhang, Cong Liming, Ono-Kihara Masako, Ma Qiaoqin, Zhang Dandan, Homma Takayuki, Kihara Masahiro

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