A cluster randomized trial of a comprehensive intervention nesting family and clinic into school centered implementation to reduce myopia and obesity among children and adolescents in Beijing, China: study protocol. - Wang, Xinxin; Dang, Jiajia; Liu, Jieyu; Liu, Yunfei; Wang, Yaqi; Shi, Di; Chen, Ziyue; Yuan, Wen; Cai, Shan; Mi, Jie; Xiao, Pei; Li, Li; et al. (BMC Public Health, 2023)