Epidemiological characteristics and socioeconomic factors of sexually transmitted infections in China during 2002–2021. - Shu, Jun-Tao; Jiang, Ting; Li, Chen-Yu; Zou, Mei-Yin; Zhou, Xiao-Yi; Zhuang, Xun; Zhang, Bin; Jiang, Yin-Hua; Qin, Gang (BMC Public Health, 2025)