What Can Children Learn from a Free Trial of Eyeglasses Use? Evidence from a Cluster‑Randomized Controlled Trial in Rural China by Yaojiang Shi PhD, Wei Nie MA, Ming Mu MA, Shuyi Song MA, Lanxi Peng MA, Lifang Zhang MA, Jie Yang PhD, Hongyu Guan PhD, Yiqi Zhu PhD, Qiufeng Gao PhD, Jingchun Nie PhD

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