Effect of C-reactive protein and serum amyloid A point-of-care testing on antibiotic prescribing for acute respiratory-tract infections at village clinics in China: A study protocol for a cluster randomised controlled trial - Minzhi Xu; Zhitong Zhang; Erjia Ge; Charis Xuan Xie; Xinyu Bai; Yuting Zhu; Guangjin Kuang; Jinxi Li; Jing Wang; Xiaolin Wei; Xiaoxv Yin (PLoS ONE, 2025)